On February 28, 2025, Republican representative Jason Perillo resigned soon after winning a special election to the Connecticut Senate. He had held the seat since 2007. Under state law, the Governor of Connecticut is required to call a special election within 10 days of a state legislative seat becoming vacant, and the election must be held within 46 days of the call. Governor Ned Lamont called the election on March 7 and scheduled the election for April 22.[1] This special election will not affect the balance of power in the state house, as Democrats held a 102–49 supermajority in the chamber prior to the vacancy.[2]
Political parties had until March 17 to nominate candidates for the office, as there are no primaries for special elections. Write-in candidates had until April 2 to register.[3]
For states without two-round systems, the date of the general election will be listed. For elections in two-round systems, races that can elect a candidate on the first ballot will have their first round date listed with an asterisk (*), while states which always hold a second round will have the date of the second round listed.
