BILLINGS, Mont. -

President Barack Obama's plan to cut carbon dioxide pollution has opened a new front in Montana's U.S. Senate race.
    
The general election campaign kicks off Wednesday between Democratic Sen. John Walsh and Republican Rep. Steve Daines.
    
Daines plans to travel to Colstrip, home of the second largest coal-fired plant west of the Mississippi River.
    
Colstrip figures to be a likely target in draft rules from the Environmental Protection Agency that call for reducing Montana emissions 21 percent.
    
Daines says he's heading to Colstrip to advocate for its 360 jobs. He says Obama's proposal is an example of federal overreach.
    
Walsh says he believes the president's plan is on the right track to reduce emissions, but he will be listening to state residents on what they think about the proposed rules.