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Democratic Party battleground primaries, 2018
Democratic Party primaries throughout the country in 2018 shaped the party's response to losses in 2014 and 2016. After Hillary Clinton's defeat in the 2016 presidential election, party officials, officeholders, and candidates clashed over the party's direction and approach to opposing Republican control over state and federal government. Ballotpedia covered every state and federal primary in 2018 to highlight the intraparty conflicts that shaped the party and the general election.
Ballotpedia identified 79 Democratic federal and state battleground primaries in 2018.
Criteria
It is typically difficult to predict how competitive primaries will be until after filing deadlines take place. However, Ballotpedia used a number of factors to give insight into the most interesting 2018 primary elections. Factors that were used to determine the competitiveness of primaries included:
- Whether or not the seat was open (retiring or resigning incumbent)
- Notable endorsements of multiple candidates
- Significant fundraising from multiple candidates
- Number of candidates
- Incumbent's years in office (if seeking re-election)
- Whether or not the district's general election was expected to be a battleground
Democratic battleground primaries
Senate
- United States Senate election in Delaware (September 6, 2018 Democratic primary)
- United States Senate special election in Minnesota (August 14, 2018 Democratic primary)
House of Representatives
- Maryland's 6th Congressional District election (June 26, 2018 Democratic primary)
- Arizona's 2nd Congressional District election (August 28, 2018 Democratic primary)
- Ohio's 12th Congressional District election (May 8, 2018 Democratic primary)
- Pennsylvania's 5th Congressional District election (May 15, 2018 Democratic primary)
- Pennsylvania's 7th Congressional District election (May 15, 2018 Democratic primary)
- Massachusetts' 3rd Congressional District election (September 4, 2018 Democratic primary)
- Massachusetts' 7th Congressional District election (September 4, 2018 Democratic primary)
- Massachusetts' 8th Congressional District election (September 4, 2018 Democratic primary)
- Michigan's 11th Congressional District election (August 7, 2018 Democratic primary)
- Michigan's 13th Congressional District election (August 7, 2018 Democratic primary)
- Minnesota's 5th Congressional District election (August 14, 2018 Democratic primary)
- Minnesota's 8th Congressional District election (August 14, 2018 Democratic primary)
- Texas' 7th Congressional District election (March 6, 2018 Democratic primary)
- Texas' 16th Congressional District election (March 6, 2018 Democratic primary)
- Texas' 21st Congressional District election (March 6, 2018 Democratic primary)
- Texas' 23rd Congressional District election (March 6, 2018 Democratic primary)
- Texas' 29th Congressional District election (March 6, 2018 Democratic primary)
- Colorado's 1st Congressional District election (June 26, 2018 Democratic primary)
- Colorado's 6th Congressional District election (June 26, 2018 Democratic primary)
- Connecticut's 5th Congressional District election (August 14, 2018 Democratic primary)
- Missouri's 1st Congressional District election (August 7, 2018 Democratic primary)
- Nebraska's 2nd Congressional District election (May 15, 2018 Democratic primary)
- New Hampshire's 1st Congressional District election (September 11, 2018 Democratic primary)
- New Jersey's 11th Congressional District election (June 5, 2018 Democratic primary)
- New Mexico's 1st Congressional District election (June 5, 2018 Democratic primary)
- North Carolina's 9th Congressional District election (May 8, 2018 Democratic primary)
- New York's 1st Congressional District election (June 26, 2018 Democratic primary)
- New York's 19th Congressional District election (June 26, 2018 Democratic primary)
- New York's 21st Congressional District election (June 26, 2018 Democratic primary)
- New York's 14th Congressional District election (June 26, 2018 Democratic primary)
- New York's 24th Congressional District election (June 26, 2018 Democratic primary)
- Florida's 5th Congressional District election (August 28, 2018 Democratic primary)
- Florida's 9th Congressional District election (August 28, 2018 Democratic primary)
- Florida's 15th Congressional District election (August 28, 2018 Democratic primary)
- Florida's 27th Congressional District election (August 28, 2018 Democratic primary)
- Virginia's 10th Congressional District election (June 12, 2018 Democratic primary)
- Wisconsin's 1st Congressional District election (August 14, 2018 Democratic primary)
- Hawaii's 1st Congressional District election (August 11, 2018 Democratic primary)
- Hawaii's 2nd Congressional District election (August 11, 2018 Democratic primary)
- Illinois' 3rd Congressional District election (March 20, 2018 Democratic primary)
- Illinois' 4th Congressional District election (March 20, 2018 Democratic primary)
- Illinois' 5th Congressional District election (March 20, 2018 Democratic primary)
- Illinois' 6th Congressional District election (March 20, 2018 Democratic primary)
- Illinois' 14th Congressional District election (March 20, 2018 Democratic primary)
- Illinois' 13th Congressional District election (March 20, 2018 Democratic primary)
- Iowa's 1st Congressional District election (June 5, 2018 Democratic primary)
- Iowa's 3rd Congressional District election (June 5, 2018 Democratic primary)
- Kansas' 3rd Congressional District election (August 7, 2018 Democratic primary)
- Kentucky's 6th Congressional District election (May 22, 2018 Democratic primary)
- Michigan's 13th Congressional District special election (August 7, 2018 Democratic primary)
- Texas' 7th Congressional District election (May 22, 2018 Democratic primary runoff)
- Georgia's 6th Congressional District election (July 24, 2018 Democratic primary runoff)
- Georgia's 7th Congressional District election (July 24, 2018 Democratic primary runoff)
State Executive
- Ohio gubernatorial and lieutenant gubernatorial election, 2018 (May 8 Democratic primary)
- Arizona gubernatorial election, 2018 (August 28 Democratic primary)
- Colorado gubernatorial and lieutenant gubernatorial election, 2018 (June 26 Democratic primary)
- Connecticut gubernatorial election, 2018 (August 14 Democratic primary)
- Florida gubernatorial and lieutenant gubernatorial election, 2018 (August 28 Democratic primary)
- Georgia gubernatorial election, 2018 (May 22 Democratic primary)
- Hawaii gubernatorial election, 2018 (August 11 Democratic primary)
- Illinois gubernatorial and lieutenant gubernatorial election, 2018 (March 20 Democratic primary)
- Iowa gubernatorial and lieutenant gubernatorial election, 2018 (June 5 Democratic primary)
- Kansas gubernatorial and lieutenant gubernatorial election, 2018 (August 7 Democratic primary)
- Maine gubernatorial election, 2018 (June 12 Democratic primary)
- Maryland gubernatorial and lieutenant gubernatorial election, 2018 (June 26 Democratic primary)
- Michigan gubernatorial and lieutenant gubernatorial election, 2018 (August 7 Democratic primary)
- Minnesota gubernatorial and lieutenant gubernatorial election, 2018 (August 14 Democratic primary)
- Nevada gubernatorial election, 2018 (June 12 Democratic primary)
- New York gubernatorial election, 2018 (September 13 Democratic primary)
- Rhode Island gubernatorial election, 2018 (September 12 Democratic primary)
- Wisconsin gubernatorial election, 2018 (August 14 Democratic primary)
- Illinois Attorney General election, 2018 (March 20 Democratic primary)
- Minnesota Attorney General election, 2018 (August 14 Democratic primary)
- New York Attorney General election, 2018 (September 13 Democratic primary)