President Barack Obama is leaving the White House Thursday for the campaign trail in Colorado, Nevada and Wisconsin.

Colorado and Nevada have long been seen by his campaign as states that can carry him over the 270-vote threshold, but Wisconsin has been viewed as a safe state for his campaign.

Yet polls show a narrowing Obama advantage in the state. On Oct. 25, Rasmussen showed a tie with Gov. Mitt Romney at 49 percent.

Obama is slated to attend a rally at Green Bay, Wisc.

Vice President Joe Biden is also slated to hold two events in the state Nov. 2.

“The Vice President will highlight his and the President’s vision for moving OUR COUNTRY forward with an economy built from the middle out, not the top down,” said a campaign statement.

GOP leaders are also campaigning for Wisconsin’s votes.

Rep. Paul Ryan, the GOP’s vice-presidential candidate is holding two rallies in the state Oct. 31.

Obama is ahead in Nevada — despite the terrible economy — partly because many of the workers in the gambling industry are unionized.

Colorado is a swing-state, although data suggest that Romney has a slight advantage in the state. RealClearPolitics’ database of polls shows the race to close to call, but the most recent poll shows Romney ahead by one point, 48 percent to 47 percent.

Biden is slated to fly into Colorado Nov. 3.

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