US Republican presidential candidate and

Veep of faith: Romney and Ryan. (Getty)

US Republican presidential candidate and former Massachusetts Governor Mitt Romney announces Wisconsin Representative Paul Ryan(R) as his vice presidential running mate during a campaign rally at the Nauticus Museum after touring the USS Wisconsin in Norfolk, Virginia, August 11, 2012. Romney and his new running mate embark on the first day of a 4-day bus trip that will take the White House hopefuls to 4 key swing states, Virginia, North Carolina, Florida and Ohio. AFP PHOTO / Saul LOEB (Photo credit should read SAUL LOEB/AFP/GettyImages)