Article Photos: Romney super PAC forces Team Obama to buy airtime defending Pennsylvania



Republican vice presidential candidate, Rep. Paul Ryan, R-Wis., and his wife Janna arrive at St. Paul International airport, Tuesday, Oct. 30, 2012, in Minneapolis. (AP Photo/Mary Altaffer)

Republican vice presidential candidate, Rep. Paul Ryan, R-Wis., and his wife Janna arrive at St. Paul International airport, Tuesday, Oct. 30, 2012, in Minneapolis. (AP Photo/Mary Altaffer)