The announced major-party candidates were the only ones to file nomination papers for a special election in the 1st Senate District.

Republicans Andre Jacque and Alex Renard will square off in a May 15 primary, and the winner will face Democrat Caleb Frostman in the June 12 general election.

Candidates had until 5 p.m. April 17 to file completed papers with at least 400 valid signatures. Jacque submitted petitions with 775 signatures on April 12, and Renard submitted 438 signatures the same day. Frostman filed his papers Monday, April 16, with 782 signatures.

Gov. Scott Walker refrained from calling a special election after he appointed then-Sen. Frank Lasee as administrator of the state Worker’s Compensation Division. Several residents and a political action committee headed by former Obama administration attorney general Eric Holder filed suit in Dane County Circuit Court to order an election, and Judge Josann Reynolds sided with the plaintiffs.

Walker had argued that the Legislature’s last general business floor sessions would be completed by March 22, and the Senate district office would remain open to serve constituent concerns with or without a standing senator after lawmakers head home for the rest of the year.

The winner of the June 12 special election will complete the last seven months of Lasee’s unexpired term. He will have to stand for re-election in November. Nomination papers for that election are currently being circulated and must be submitted by 5 p.m. June 1. The primary election would be Aug. 14.

The Senate currently is scheduled to wrap up its business for this legislative session by the end of May.