MADISON, Wis. (AP) -- The Republican leader of the state Senate says he expects recall elections to proceed against three of his colleagues, despite challenges they have made to thousands of signatures on petitions seeking their ouster from office.

Majority Leader Scott Fitzgerald said Friday he is hopeful, though, that his election can be blocked through the challenges he made to the Government Accountability Board on Thursday.

Fitzgerald was the only one of the four who clearly challenged more than enough signatures to void an election.

But whether to reject the signatures is up to the GAB. Its deadline for deciding is March 19.

The other senators are Pam Galloway of Wausau, Terry Moulton of Chippewa Falls and Van Wanggaard of Racine.