MADISON, Wis. (AP) -- Two former legislators and a veteran state representative say they'll challenge a trio of Republican state senators in possible recall elections later this year.

Democrats angry over Republican support for Gov. Scott Walker's contentious collective bargaining bill have mounted recall attempts against Sens. Terry Moulton of Chippewa Falls, Pam Galloway of Wausau, Van Wanggaard of Racine and Scott Fitzgerald of Juneau.

Former state Rep. Kristin Dexter, an Eau Claire Democrat, says she'll run against Moulton. Dexter served in the Assembly in 2009 and 2010.

Former state Sen. John Lehman, a Racine Democrat, will run against Wanggaard. Assembly Assistant Minority Leader Donna Seidel, a Wausau Democrat, will run against Galloway.

No candidates have emerged to challenge Fitzgerald yet.