Jason Cox

Jason Cox

Democratic Party

Candidate, Harris County Probate Court No. 3

Harris County Probate Court No. 3

Tenure

2019 - Present

Term ends

2026

Years in position

7

---

Report an officeholder change

Elections and appointments

Last election

March 3, 2026

Next election

November 3, 2026

Education

Bachelor's

Texas A&M University, 1994

Law

University of Houston Law Center, 2002

Personal

Birthplace

Houston, TX

Contact

Personal LinkedIn

Jason Cox (Democratic Party) is a judge of the Harris County Probate Court No. 3 in Texas. He assumed office on January 1, 2019. His current term ends on December 31, 2026.

Cox (Democratic Party) is running for re-election for judge of the Harris County Probate Court No. 3 in Texas. He is on the ballot in the general election on November 3, 2026. He advanced from the Democratic primary on March 3, 2026.

Biography

Jason Cox was born in Houston, Texas. He earned a bachelor's degree from Texas A&M University in 1994 and a law degree from the University of Houston Law Center in 2002.

Elections

2026

See also: Municipal elections in Harris County, Texas (2026)

General election

The general election will occur on November 3, 2026.

The candidate list in this election may not be complete.

General election for Harris County Probate Court No. 3

Incumbent Jason Cox (D) and Ronald Schramm (R) are running in the general election for Harris County Probate Court No. 3 on November 3, 2026.

		Candidate
	Submit photo	Jason Cox (D)
	Submit photo	Ronald Schramm (R)

---

	Incumbents are bolded and underlined.
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Democratic primary

The candidate list in this election may not be complete.

Democratic primary for Harris County Probate Court No. 3

Incumbent Jason Cox (D) advanced from the Democratic primary for Harris County Probate Court No. 3 on March 3, 2026.

		Candidate	%	Votes
✔	Submit photo	Jason Cox	100.0	290,238

---

	Incumbents are bolded and underlined. Source	Total votes: 290,238
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Republican primary

The candidate list in this election may not be complete.

Republican primary for Harris County Probate Court No. 3

Ronald Schramm (R) advanced from the Republican primary for Harris County Probate Court No. 3 on March 3, 2026.

		Candidate	%	Votes
✔	Submit photo	Ronald Schramm	100.0	146,282

---

	There were no incumbents in this race. Source	Total votes: 146,282
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Endorsements

Cox received the following endorsements. To send us additional endorsements, click here.

• LGBTQ+ Victory Fund

2022

See also: Municipal elections in Harris County, Texas (2022)

General election

General election for Harris County Probate Court No. 3

Incumbent Jason Cox defeated Rory R. Olsen in the general election for Harris County Probate Court No. 3 on November 8, 2022.

		Candidate	%	Votes
✔	Submit photo	Jason Cox (D)	51.6	542,320
	Submit photo	Rory R. Olsen (R)	48.4	509,040

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 1,051,360
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Democratic primary election

Democratic primary for Harris County Probate Court No. 3

Incumbent Jason Cox advanced from the Democratic primary for Harris County Probate Court No. 3 on March 1, 2022.

		Candidate	%	Votes
✔	Submit photo	Jason Cox	100.0	135,588

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 135,588
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Republican primary election

Republican primary for Harris County Probate Court No. 3

Rory R. Olsen advanced from the Republican primary for Harris County Probate Court No. 3 on March 1, 2022.

		Candidate	%	Votes
✔	Submit photo	Rory R. Olsen	100.0	131,342

---

	There were no incumbents in this race. The results have been certified. Source	Total votes: 131,342
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

2018

General election

General election for Harris County Probate Court No. 3

Jason Cox defeated incumbent Rory R. Olsen in the general election for Harris County Probate Court No. 3 on November 6, 2018.

		Candidate	%	Votes
✔	Submit photo	Jason Cox (D)	56.7	668,092
	Submit photo	Rory R. Olsen (R)	43.3	510,963

---

	Incumbents are bolded and underlined. The results have been certified. Source	Total votes: 1,179,055
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Democratic primary election

Democratic primary for Harris County Probate Court No. 3

Jason Cox advanced from the Democratic primary for Harris County Probate Court No. 3 on March 6, 2018.

		Candidate	%	Votes
✔	Submit photo	Jason Cox	100.0	128,120

---

	There were no incumbents in this race. The results have been certified.	Total votes: 128,120
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Republican primary election

Republican primary for Harris County Probate Court No. 3

Incumbent Rory R. Olsen advanced from the Republican primary for Harris County Probate Court No. 3 on March 6, 2018.

		Candidate	%	Votes
✔	Submit photo	Rory R. Olsen	100.0	110,715

---

	Incumbents are bolded and underlined. The results have been certified.	Total votes: 110,715
= candidate completed the Ballotpedia Candidate Connection survey.
If you are a candidate and would like to tell readers and voters more about why they should vote for you, complete the Ballotpedia Candidate Connection Survey.
Do you want a spreadsheet of this type of data? Contact our sales team.

Selection method

See also: Partisan election of judges

Judges of the probate courts are elected in partisan elections by the county they serve and serve four-year terms, with vacancies filled by a vote of the county commissioners.

Qualifications
To serve on a county court, a judge must:

• be at least 25 years old;
• be a resident of his or her respective county for at least two years; and
• have practiced law or served as a judge for at least four years preceding the election.

Campaign themes

2026

Ballotpedia survey responses

See also: Ballotpedia's Candidate Connection

Jason Cox has not yet completed Ballotpedia's 2026 Candidate Connection survey. Send a message to Jason Cox asking him to fill out the survey. If you are Jason Cox, click here to fill out Ballotpedia's 2026 Candidate Connection survey.

Who fills out Ballotpedia's Candidate Connection survey?

Any candidate running for elected office, at any level, can complete Ballotpedia's Candidate Survey. Completing the survey will update the candidate's Ballotpedia profile, letting voters know who they are and what they stand for.  More than 26,000 candidates have taken Ballotpedia's candidate survey since we launched it in 2015. Learn more about the survey here.

You can ask Jason Cox to fill out this survey by using the button below or emailing campaign@jasoncoxforprobatecourt3.com.

2022

Jason Cox completed Ballotpedia's Candidate Connection survey in 2022. The survey questions appear in bold and are followed by Cox's responses.

Expand all | Collapse all

Who are you? Tell us about yourself.

Judge Cox is the Judge of Harris County Probate Court #3, a court with county-wide jurisdiction over probate and civil mental health cases. Probate Court #3 has courtrooms at the Harris County Courthouse as well as the Harris County Psychiatric Center and employs a staff of 20. By size and caseload, this Court is one of the largest in Texas. Judge Cox is one of the highest rated judges in Harris County and has won awards for public service in the legal community. Prior to being elected in 2018, Judge Cox worked as an attorney for 15 years specializing in probate, where he was a frequent writer and speaker. He was also a longtime adjunct professor at the University of St. Thomas in Houston where he taught pre-law classes to students who were among the first in their families to attend college. A pediatric and adult cancer survivor, Judge Cox is also a longtime volunteer at MD Anderson Cancer Center in Houston, where he has been recognized for contributions to patient support.

Please list below 3 key messages of your campaign. What are the main points you want voters to remember about your goals for your time in office?

• Judge Cox believes in public service and treats everyone who comes before the Court with courtesy, dignity and respect.
• Judge Cox believes in innovation, and has worked with a number of agencies and organizations to create new programs that have expanded mental health services in Harris County.
• Judge Cox has worked to improve Texas' probate laws by serving on State committees focused on making courts more accessible.

What areas of public policy are you personally passionate about?

When Judge Jason Cox was elected in 2018, he promised Harris County Probate Court #3 would embrace the challenges of public service, and he has kept that promise. Since being sworn in, Judge Cox has created partnerships with local entities (such as UTHealth, The Harris Center, and the University of Houston) to extend mental health services, and created new programs, including an outpatient treatment program for persons suffering from mental illness (which was awarded a $2.7 million, four-year grant). He has also worked with the Office of the Governor on the Committee on People with Disabilities to review and offer recommendations for improvement for laws related to guardianship; obtained a technology grant to allow parties to participate in proceedings remotely; revised the system for Court appointments to ensure more equitable and diverse appointments; provided free classes through the Court for attorneys practicing in the area of mental health; and has spoken at and helped organize numerous events for the legal community and the community at-large on the issues of probate and mental health.

His court is efficient, fair, and treats all who come before it with dignity and respect. These qualities are reflected in his recent ratings in the Houston Bar Association’s Judicial Evaluation Poll, which were among the highest in the County.

Note: Ballotpedia reserves the right to edit Candidate Connection survey responses. Any edits made by Ballotpedia will be clearly marked with [brackets] for the public. If the candidate disagrees with an edit, he or she may request the full removal of the survey response from Ballotpedia.org. Ballotpedia does not edit or correct typographical errors unless the candidate's campaign requests it.

See also

2026 Elections

What's on the ballot? U.S. Congress U.S. Congress special elections State executives State legislatures State courts Ballot measures Municipal government School boards Election analysis hub

Government

Who represents me? U.S. Congress State executives State legislators State courts Ballot measures Municipal government School boards

Newsletters

The Daily Brew The Weekly Brew The Ballot Bulletin Checks and Balances Economy and Society Hall Pass Number of the Day Robe & Gavel Union Station

External links

Search Google News for this topic

Personal

LinkedIn

Footnotes

Texas courts

---

Federal courts:

Fifth Circuit Court of Appeals • U.S. District Court: Eastern District of Texas, Western District of Texas, Northern District of Texas, Southern District of Texas • U.S. Bankruptcy Court: Eastern District of Texas, Western District of Texas, Northern District of Texas, Southern District of Texas

State courts:

Texas Supreme Court • Texas Court of Appeals • Texas Court of Criminal Appeals • Texas District Courts • Texas County Courts • Texas County Courts at Law • Texas Statutory Probate Courts • Texas Justice of the Peace Courts

State resources:

Courts in Texas • Texas judicial elections • Judicial selection in Texas