With the race for the White House in its final stretch, President Obama and Republican Mitt Romney are stepping up their games in crucial swing states.

Obama is on a campaign blitz across six battleground states, beginning with a rally in Iowa and moving on to Colorado, California and Nevada. He was in Ohio Tuesday and wasted no time slamming his challenger on the auto industry and the economy.

Romney is also making appearances in Nevada and Iowa, after rallying supporters near Denver. He's working to project optimism and says the president's campaign is waning.

Polls show a tightening race in many of the key states.