MADISON, Wis. — Candidates are lining up to run in a special election for open Wisconsin Senate and Assembly seats.

Gov. Scott Walker issued an executive order Thursday scheduling special elections to fill open seats in the 1st Senate District and the 42nd Assembly District.

Door County Economic Development Corporation Executive Director Caleb Frostman announced he'll run for the Senate seat as a Democrat. State Rep. Andre Jacque and Green Bay factory manager Alex Renard will face off in the GOP primary.

Republican Jon Plumer, a Lodi town board member, is running for the Assembly seat. Democrat Ann Groves Lloyd, also of Lodi, registered to run as well.

Candidates have until April 17 to file nomination papers.

The primary will be May 15 with the general elections June 12.