BILLINGS, Mont. -

Montana's U.S. House candidates claim to offer "all-of-the-above" solutions to the nation's energy problems, but differences in the details show a wide divide.
    
Republican Ryan Zinke is a fossil-fuels advocate who released his plan last week. Democrat John Lewis touts the potential for renewable energy he says could transform the state's energy sector over the long-term.
    
Zinke says he has doubts about humanity's role in climate change and is looking to oil, gas and coal to address energy needs. Lewis says Montanans can see the effects of climate change in drought and wildfires. He wants to invest in expanding wind power and plant-based fuels.
    
The candidate's dueling visions could play a significant role in November as voters seek distinctions in the contest for the state's only House seat.