Thursday, January 18th

State Rep. Adam Jarchow (R-Balsam Lake) and Patti Schachtner, the chief medical examiner for St. Croix County.(Photo: handouts from the candidates)

MADISON - Tuesday's election in a northwestern Wisconsin Senate race could yield clues about whether Republicans are keeping their hold on state government or facing a wave that could break their grip this November. 

GOP groups have been aggressive in spending money — and confident in predicting victory — in the Republican-leaning 10th Senate District. Democrats have kept quieter about their own hopes, trying to control expectations in a seat where their party has been disappointed before. 

But with President Donald Trump's state approval rating relatively low, both sides are watching the race between state Rep. Adam Jarchow (R-Balsam Lake) and Democrat Patty Schachtner, the chief medical examiner for St. Croix County. 

In a first for Americans for Prosperity — the group backed by the conservative billionaire Koch brothers — the Wisconsin chapter is paying for ads and mailings expressly backing a candidate, Jarchow.