Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: A heckler interrupts Republican presidential candidate Mitt Romney as he campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

File photo of Mitt Romney (Photo by Win McNamee/Getty Images)

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)

Mitt Romney Attends Campaign Rally In Virginia

FAIRFAX, VA - SEPTEMBER 13: Republican presidential candidate Mitt Romney campaigns at Van Dyck Park September 13, 2012 in Fairfax, Virginia. Romney and U.S. President Barack Obama are spending significant time competing in Virginia, one of the primary battleground states. (Photo by Win McNamee/Getty Images)