Supporters watch as former President Bill Clinton take the stage...

PBS editor Cade Cridland, right, readies the stage for a...

First lady Michelle Obama meets with supporters after a grassroots campaign...

Mike Sciullo, dressed as Uncle Sam, mocks rally attendees en...

GOP presidential candidate Mitt Romney is seen at a rally...

Former President Bill Clinton campaigns for fellow Democratic President Barack...

Sen. Harry Reid supporters gather outside Vegas PBS before Sen....

Supporters hold up signs while Ann Romney, wife of Republican...

U.S. Pres. Barack Obama, center, tours Sempra Energy's Copper Mountain...

First lady Michelle Obama is seen during a grassroots campaign...

U.S. President Barack Obama arrives on Air Force One at...

Gubernatorial hopeful Rory Reid is highlighted by an ambient spotlight...

Supporter Linda Kincaid, second from left, cheers for President Barack...

A supporter holds up four fingers as the crowd chants...

President Barack Obama speaks to the crowd during a campaign...

Obama volunteer Johnny Shoemaker listens to former President Bill Clinton...

Ann Romney, right, wife of Republican presidential hopeful Mitt Romney,...

Members of the crowd cheer during a rally featuring Ann...

Supporters of vice presidential contender Sarah Palin hold a likeness...

Texas Gov. Rick Perry, center, campaigns for GOP presidential contender...

Former President Bill Clinton campaigns for fellow Democratic President Barack...

A sign is seen at a tea party rally at...

Sharron Angle supporter Sharon Young, right, gets in a confrontation...

Ann Romney, wife of Republican presidential hopeful Mitt Romney, reaches...

Sen. Harry Reid and republican challenger Sharron Angle's senatorial debate...