Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama speaks at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama speaks at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa.(Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama speaks at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama speaks at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama speaks at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama speaks at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama meets supporters at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: U.S. President Barack Obama speaks at a campaign rally at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)

Obama Rallies Supporters In Battleground State Of Nevada

LAS VEGAS, NV - OCTOBER 24: Singer Katy Perry performs at a campaign rally for U.S. President Barack Obama at Doolittle Park on October 24, 2012 in Las Vegas, Nevada. Obama is on a 48-hour campaign tour of battleground states, including Colorado, Florida and Iowa. (Photo by John Gurzinski/Getty Images)