The 2010 Connecticut gubernatorial election took place on November 2, 2010, to elect the 88th Governor of Connecticut. Incumbent Republican Governor Jodi Rell had announced in a press conference in Hartford on November 9, 2009, that she would not seek re-election in 2010. The sites Cook Political Report and CQ Politics both rated the election as a toss-up. This was the first open seat gubernatorial election in the state since 1994. As of 2023, this is the last time the Governor’s office in Connecticut changed partisan control.

Mary Carolyn "Jodi" Rell is an American former politician who served as the 87th governor of Connecticut from 2004 to 2011. Rell also served as the state's 105th lieutenant governor of Connecticut from 1995 to 2004 under Governor John G. Rowland, and became governor after Rowland resigned from office. As of 2024, Rell is the very last Republican and woman to officially serve as Governor of Connecticut to date.