State Rep. Geoff Simpson filed Tuesday for re-election in District 47, joining other candidates in the Covington, Maple Valley and Black Diamond areas who this week formally entered races for the Legislature.

Simpson revealed his political plans a week after authorities dropped a case against him involving an alleged assault on his ex-wife,

Through Tuesday, two other incumbent legislators and four challengers also signed up. The five-day candidate filing period ended Friday.

In the primary election in August, Simpson will have at least one opponent. Fellow Democrat Leslie Hamada filed for Simpson’s Position 1. On the Republican side, Mark Hargrove also filed as of Tuesday.

Simpson is planning a formal campaign kickoff at noon June 14 at the campaign headquarters in Covington he shares with fellow 47th District Rep. Pat Sullivan. Sullivan has filed for his Position 2.

In the 5th District, Democrat Phyllis Huster and Republican Sterling Strickland filed for state senator (the incumbent is Republican Cheryl Pflug of Maple Valley), and state Rep. Glenn Anderson (Position 2) filed for re-election.

The 5th District includes Maple Valley, North Bend, Issaquah, Sammamish and Snoqualmie.

“It has been an honor serving the voters of the 47th,” which includes Covington, Black Diamond and some areas of Kent and Renton, said Simpson. He added he wants to continue trying “to create and retain good-paying jobs, make healthcare more affordable and improve our transportation system. I will always stand up and fight for the hard-working people in my district.”

Simpson said he has the support of local Democrats and labor-related organizations. Among the latter, he said, endorsements have come from Washington Education Association, Washington State Labor Council, Washington Conservation Voters, Washington State Patrol Troopers Association and firefighter organizations. Simpson is a firefighter for the Kent Fire Department.

Bryan Kesterson, chairman of the 47th District Democrats, said the group endorsed Simpson’s re-election campaign on “a unanimous vote.”

Simpson, a legislator since 2000, is the first Democrat in the 47th District to be elected to the state House of Representatives. Before that, he was a Covington City Council member and served on the board of Kent Youth and Family Services.