Local election officials in western Wisconsin have started recounting votes in the race for a key state Senate seat.

Election Day returns show Senate Minority Leader Jennifer Shilling with a 56-vote lead over Republican challenger Dan Kapanke. He filed a request for a recount with the state Elections Commission last week.

Officials in the four counties in the Senate district — Crawford, La Crosse, Monroe and Vernon — began recounting votes Monday morning. Commission officials say the recount could take anywhere from three to six days.