2015 United States elections

Federal elections

• Illinois's 18th congressional district: Representative Aaron Schock announced his resignation on March 17, 2015. The election was held on September 10, 2015, and won by Republican Darin LaHood, who was sworn in on September 17, 2015.
• Mississippi's 1st congressional district: Representative Alan Nunnelee died on February 6, 2015. The election was won by Republican Trent Kelly, who was sworn into office on June 2, 2015.
• New York's 11th congressional district: Representative Michael Grimm resigned from Congress on January 5, 2015, after pleading guilty to tax evasion. The election was won by Republican Daniel M. Donovan, Jr., who was sworn into office on May 12, 2015.

  Congressional leadership election

State elections

Gubernatorial

• Kentucky: Democrat Steve Beshear is term-limited and could not run for re-election to a third term in office. Republican Matt Bevin won the election.
• Louisiana: Republican Bobby Jindal is term-limited and could not run for re-election to a third term in office. Democrat John Bel Edwards won the election.
• Mississippi: Republican Phil Bryant ran for re-election to a second term in office. Bryant was re-elected.

  Statewide executive offices

• Kentucky: Elections were held for the offices of Attorney General, Secretary of State, State Auditor, State Treasurer and Agriculture Commissioner.
• Louisiana: Elections were held for the offices of Lieutenant Governor, Attorney General, Secretary of State, State Treasurer, Commissioner of Agriculture and Forestry and Commissioner of Insurance.
• Mississippi: Elections were held for the offices of Lieutenant Governor, Attorney General, Secretary of State, State Treasurer, State Auditor, Commissioner of Agriculture and Commerce, Commissioner of Insurance and the Mississippi Public Service Commission.

  State legislatures

Local elections

Mayoral elections

• Anchorage, AK: Republican Dan Sullivan is term-limited and cannot run for re-election to a third term in office. Democrat Ethan Berkowitz was elected to replace Sullivan.
• Arlington, TX: Republican Robert Cluck was defeated for a seventh term as mayor by Jeff Williams.
• Boise, ID: Democrat David H. Bieter won re-election to a fourth term in office.
• Cary, NC: Democrat Harold Weinbrecht won re-election to a third term in office.
• Charlotte, NC: Democrat Dan Clodfelter was defeated in the Democratic primary. Jennifer Roberts won the Democratic primary and election.
• Chicago, IL: Democrat Rahm Emanuel won re-election to a second term in office.
• Colorado Springs, CO: Republican Steve Bach is retiring rather than running for re-election to a second term. Republican John Suthers was elected to replace Bach.
• Columbus, OH: Democrat Michael B. Coleman is retiring rather than running for re-election to a fifth term in office. Democrat Andrew Ginther was elected to replace Coleman.
• Dallas, TX: Democrat Mike Rawlings won re-election to a second term in office.
• Denver, CO: Democrat Michael Hancock won re-election to a second full term in office.
• Duluth, MN: Democrat Don Ness is retiring rather than running for re-election to a third term in office.
• Fort Wayne, IN: Democrat Tom Henry is running for re-election to a third term.
• Fort Worth, TX: Republican Betsy Price won re-election to a third term in office.
• Greensboro, NC: Democrat Nancy Vaughan is running for re-election to a second term.
• Hartford, CT: Incumbent Pedro Segarra was defeated in the Democratic primary election by Luke Bronin. Bronin then defeated independent Joel Cruz, Jr. in the general election.
• Houston, TX: Democrat Annise Parker is term-limited and could not run for re-election to a fourth term in office. A run off was held on December 12, 2015. Democrat Sylvester Turner won the election.
• Indianapolis, IN: Republican Greg Ballard is retiring rather than running for re-election to a third term in office. Democrat Joe Hogsett was elected to replace Ballard.
• Jacksonville, FL: Democrat Alvin Brown was defeated for a second term in office by Republican Lenny Curry.
• Kansas City, MO: Incumbent Sly James won re-election to a second term in office.
• Knoxville, TN: Democrat Madeline Rogero is running for re-election to a second term.
• Las Vegas, NV: Incumbent Democrat Carolyn Goodman won re-election to a second term in office.
• Lincoln, NE: Democrat Chris Beutler won re-election to an unprecedented third term in office.
• Madison, WI: Democrat Paul Soglin won re-election to an eighth term in office.
• Memphis, TN: Democrat A C Wharton lost re-election to a fifth full term in office. Mayor-elect Jim Strickland won the election, with 41.5% of the votes cast, compared to Wharton's 22%.
• Montgomery, AL: Republican Todd Strange won re-election to a third term in office.
• Nashville, TN: Democrat Karl Dean is term-limited and could not run for re-election to a third term in office. Democrat Megan Barry was elected to replace Dean.
• Orlando, FL: Incumbent Democrat Buddy Dyer won re-election for a fourth term.
• Philadelphia, PA: Democrat Michael Nutter is term-limited and could not run for re-election to a third term in office. Democrat James F. Kenney was elected to replace Nutter.
• Phoenix, AZ: Democrat Greg Stanton won re-election to a second term in office.
• Portland, ME: Incumbent Democrat Michael Brennan was defeated for reelection by fellow Democrat Ethan Strimling.
• Raleigh, NC: Incumbent Nancy McFarlane won re-election to a second term in office.
• Salt Lake City, UT: Democrat Jackie Biskupski defeated Incumbent Democrat Ralph Becker.
• San Antonio, TX: Democrat Ivy Taylor won election to a first full term in office.
• San Francisco, CA: Democrat Ed Lee won re-election to a second term in office.
• South Bend, IN: Democrat Peter Buttigieg won re-election to a second term in office.
• Springfield, MO: Libertarian Robert Stephens won re-election.
• Tampa, FL: Democrat Bob Buckhorn was re-elected to a second term in office.
• Toledo, OH: Democrat Paula Hicks-Hudson is running in a special election to fill the remainder of the term of late Mayor D. Michael Collins.
• Tucson, AZ: Democrat Jonathan Rothschild is running for re-election to a second term.
• West Palm Beach, FL: Democrat Jeri Muoio won re-election to a second term in office.
• Wichita, KS: Democrat Carl Brewer is term-limited and could not run for re-election to a third term in office. Republican Jeff Longwell was elected to replace Brewer.

  Other local elections

• Chicago Alderman
• Peoria, IL City Council

• Houston, Texas Proposition 1: A referendum on an anti-discrimination ordinance known as the Houston Equal Rights Ordinance. Houston voters rejected this measure.

  Tables of partisan control results