President Barack Obama's plan to curb power plant pollution puts Democrats running for office in coal country in a tough spot: Criticize their president, or side with him and become part of what could be a major drag on their region's economy.

President Barack Obama's plan to curb power plant pollution puts Democrats running for office in coal country in a tough spot: Criticize their president, or side with him and become part of what could be a major drag on their region's economy.

Many of Obama's allies in Kentucky, West Virginia and Colorado already are facing tough odds, with Republicans attacking them for what the GOP has branded a "war on coal."

Few Democratic Senate candidates are defending the plan.

In Kentucky, Alison Lundergan Grimes is pledging to "fiercely oppose the president's attack on Kentucky's coal industry."

In West Virginia, Democratic contender Natalie Tennant also promises to oppose Obama.

Sen. Mark Udall of Colorado calls the plan "a good start" before noting his state already has made progress without Obama's help.