McCain up in 4 key states.

Guess which presidential candidate got a bounce in the polls this week. John McCain! While self-proclaimed "citizen of the world" Barack Obama is on his international photo-op and publicity tour, John McCain is emphasizing the critical importance of domestic oil exploration to the American economy.

"In Colorado, McCain led 46 percent to 44 percent. Obama led in Michigan, 46 percent to 42 percent; by 46 percent to 44 percent in Minnesota and by 50 percent to 39 percent in Wisconsin, according to the polls posted on Quinnipiac University's Web site.

Voters in the four states back offshore drilling by margins of 22 to 31 percentage points. The polls also show voters in those states would support drilling in the Arctic National Wildlife Refuge by 7 to 12 percentage points.

The polling data come in a week in which Obama has received heavy news coverage with a trip through war zones, the Mideast and Europe."

Here are the new poll results:

Colorado (9 electoral votes): McCain up 2% to 46%, Obama down 5% to 44% (in June, Obama 49%, McCain 44%).

Michigan (17 electoral votes): Obama down 2% to 46%, McCain steady at 42% (in June, Obama 48%, McCain 42%).

Minnesota (10 electoral votes): Obama down 8% to  46%, McCain up 7% to 44% (in June, Obama 54%, McCain 37%).

Wisconsin (10 electoral votes): Obama down 2% to 50%, McCain steady at 39% (in June, Obama 52%, McCain 39%).

The Quinnipiac release on its poll notes that McCain "has picked up support in almost every group in every state, especially among independent voters and men voters."

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