CUMBERLAND — A special election to replace former District 45 state Rep. Dale Denno, D-Cumberland, will be held June 11, coinciding with the regular June election.

Denno announced his resignation from the Cumberland-Gray district March 26, effective the following day. He said a continuing battle with lung cancer forced him to step down.

Democrats, Green Independents and Republicans must caucus to choose their candidates for the office. Nominations are due to the secretary of state’s office by 5 p.m. Thursday, April 18. Steve Moriarty, a Cumberland Democrat who served in the House from 2012-2014, is a candidate, Denno said last week.

Non-party candidates have to circulate petitions and obtain signatures from at least 50 registered voters in the district and submit those by April 18. Write-in candidates must declare candidacies by 5 p.m. Thursday, April 25.

The winner will serve the remainder of Denno’s term, through the end of 2020.