|Strafford 3 District New Hampshire House of Representatives|
| Term in office began|
1996-2000, 2002-2004, 2006-
| Term in office ended|
Vachon is an attorney with Law Office of Dennis Vachon and a realtor with Vachon Realty. His other professional experiences include teaching with the Peace Corps Volunteer in West Africa and program specialist for the United States Department of Agriculture.
Vachon attended the economics program at the University of Maryland; earned a BA in Political Science from University of New Hampshire; and a J.D. from Antioch School of Law. He and his wife, Jane, have two children; John-Paul and Sarah.
Vachon did not seek re-election to Strafford 3 in 2010.
On November 4, 2008, Vachon finished second for the eight-seat Strafford District 3 in New Hampshire receiving 6,035 votes, behind Democrat Susan Price (New Hampshire)(6,190) and ahead of Democrats Robert Perry(5,864) and Larry Brown(5,717) and Rachel Burke(5,704), James E. Cyr(5,624) Sylvia J. Arcouette(5,409) and Bob Srnec(5,017) and Republicans David A. Bickford(5,576), Carol M. Vita(5,492), George L. Bailey(5,440), Jim Forsythe(5,426), Dunc Chaplin(5,352), David L. Mincin(4,847), and Marty Harty(4,659), and others(20).
|New Hampshire House of Representatives, Strafford District 3|
|Susan Price (New Hampshire) (D)||6,190|
|Dennis Vachon (D)||6,035|
|Robert Perry (D)||5,864|
|Larry Brown (D)||5,717|
|Rachel Burke (D)||5,704|
|James Cyr (D)||5,624|
|David Bickford (R)||5,576|
|Carol Vita (R)||5,492|
|George L. Bailey (R)||5,440|
|Jim Forsythe (R)||5,426|
|Sylvia Arcouette (D)||5,409|
|Dunc Chaplin (R)||5,352|
|Bob Srnec (D)||5,017|
|David Mincin (R)||4,847|
|Marty Harty (R)||4,659|
While in the New Hampshire House of Representatives, Vachon served on the following committees:
- New Hampshire House of Representatives
- Project Vote Smart legislative profile
- Project Vote Smart biography
- Campaign Contributions: 2008, 2002, 2000, 1998
|New Hampshire House Strafford 3 District
1996-2000, 2002-2004, 2006–2010
| Succeeded by|