State Sen. Mark DeSaulnier (D), one of the frontrunners in the yet-to-be-scheduled special election to replace Rep. Ellen Tauscher (D), has two major fundraisers scheduled this month.

On the evening of June 16, supporters will be gathering at a golf club in Pleasanton for a fundraiser sponsored by two Bay Area developers. On the evening of June 20, there will be a fundraiser for DeSaulnier at a private home in Alamo sponsored by several local officials, including Rep. George Miller (D).

DeSaulnier this week racked up the endorsement of the American Federation of State, County and Municipal Employees District Council 57 in Oakland.

DeSaulnier is one of three leading Democrats running to replace Tauscher, who is expected to be confirmed for a top job at the State Department this summer. The other top contenders are Lt. Gov. John Garamendi and state Assemblywoman Joan Buchanan, although several candidates of all political parties are already in the race.

Under California special election rules, all the candidates will appear together on one ballot in an initial primary. If no candidate tops 50 percent of the vote, the top vote-getters from each party advance to the next round.

Late last week, attorney David Harmer (R) entered the race, saying he had already raised about $150,000. But Tauscher’s seat is expected to remain in Democratic hands.