Two men have filed a federal complaint seeking the right to run for Montana's U.S. House seat in the special election in May.
Democrats are trying for a third time this legislative session to raise taxes on the wealthiest Montanans.
Operations to kill bison in Yellowstone National Park for slaughter have come to an end, with more than 1,200 bison culled this winter.
Weak high pressure will build into western Montana on Thursday, bringing nice early spring weather to the region.
Wednesday marked the 60th day of the legislative session, which means two-thirds of the lawmaking work is finished.