*At the presidential election enters its final week, Barack and Michelle Obama will be traveling to the swing states to rally supporters with help from the campaign’s top celebrity backers, according to The Hollywood Reporter.

Today, Obama will appear at a grassroots rally with Eva Longoria in Las Vegas, according to campaign officials.

The first lady, meanwhile, will head to Florida, where Stevie Wonder is set to perform at a rally in Jacksonville and Marc Anthony will deliver remarks and introduce the first lady at events in Miami and Daytona Beach.

Katy Perry will perform her third concert for Barack Obama’s reelection campaign at a grassroots rally with the president on Saturday in Milwaukee, Wisconsin.

Katy Perry

Perry has become Obama’s most popular entertainer with young voters this election season. More than 13,000 people lined up to hear the singer at an Obama rally on Oct. 24 in Las Vegas, where Perry wore a white latex dress printed with an image of a giant ballot.

On Saturday evening, Obama will join former President Bill Clinton and singer Dave Matthews for at a grassroots event in Bristow, Virginia.

The Las Vegas Sun noted on Thursday that in the past two weeks Perry, Longoria, Magic Johnson, Jon Hamm, Kelsey Grammer, Jon Voight, John Ratzenberger, Zach Galifianakis, Ed Helms and others “have all graced the Silver State to stump for Barack Obama and Mitt Romney.”