Most Rock County Board supervisors won't have to worry about reelection. Twenty-five of the 29 districts have no known opposition, and one district won't even have a name on the ballot. Terry Thomas failed to file nomination papers in District 21 and plans to run as a write-in. The contested races include Districts One with Incumbent Mary Beaver and challenger James Montgomery. In District Four, Jon Jennings will challenge incumbent Mary Mawhinney. The District 24 race features Incumbent Rich Bostwick against Spencer Zimmerman. And in District 25 newcomer Anders Dowd Challenges Incumbent Billy Bob Grahn. The deadline to challenge nomination papers is Friday. Election day is April 5th.