MADISON, Wis. (AP) — Voters will winnow the field of candidates for state Supreme Court and an open congressional seat representing northern Wisconsin in primaries today.

The Supreme Court primary pits incumbent conservative Justice Dan Kelly against liberal challengers Jill Karofsky and Ed Fallone. The top two vote-getters will advance to an April 7 general election with a 10-year term on the court at stake.

The 7th Congressional District primaries will determine who will face off in a special election May 12 to replace retired Republican U.S. Rep. Sean Duffy. The Republican primary features a battle between state Sen. Tom Tiffany and retired Army Capt. Jason Church. The Democratic primary matches Tricia Zunker, president of the Wausau school board, against Lawrence Dal, who didn’t mount an active campaign.