It's game on for recall elections in Wisconsin.

The state's Government Accountability Board on Friday certified recall elections in May and June for Republican Gov. Scott Walker, who enraged Democrats and labor unions last year by removing most bargaining rights for public employees.

Walker will be only the third U.S. governor to face a recall election.

Recall election dates for Walker, Lt. Gov. Rebecca Kleefisch and four Republican state senators were set for May 8 and June 5. The May date will be the primary date if necessary, and the June date would be the general election date. If there are no primaries, the general election will be May 8.

Primaries in most of the races are expected. Candidates have until April 10 to file.

The board found that there were 900,938 valid petition signatures to recall Walker and 808,990 to recall Kleefisch. Only 540,208 were needed.

Sufficient recall signatures were found to trigger recall elections against four Republican state senators: Scott Fitzgerald, the Majority Leader of the Senate, District 13; Van Wanggard, District 21; Terry Moulton, District 23; and Pam Galloway, District 29.

Galloway has since resigned, so her recall election will be in effect an open seat.

"We believe a majority of Wisconsin voters will stand with Governor Walker's record," the Walker campaign said in a statement. "Voter are not prepared to reverse the tremendous progress the governor has made by prematurely ending his term in this $9 million power grab by out-of-state special interests."