WEST ALLIS -- Thousands of voters will take to the polls Tuesday to decide more than 3,500 races across the state.

Locally, big races include the 15th Aldermanic contest in Milwaukee, which will fill the Common Council seat vacated by Willie Hines. Tuesday's primary will narrow the list of candidates from five to two. 

Also, in Milwaukee County, voters will be asked if supervisors pay should be cut in half and their benefits be eliminated.

They'd essentially be part-time, making just over $24,000. That's down from about $50,000.

If it passes, the changes would take effect April 18, 2016 and save taxpayers about $475,000.

In Brookfield, voters will elect a mayor. Incumbent Steve Ponto is challenged by former Brookfield mayor Jeff Speaker. Ponto unseated Speaker four years ago.

City of Waukesha voters will also elect a mayor. Incumbent Jeff Scrima is being challenged by Shawn Reiley.