(Credit: Getty Images)
Ryan painted the incumbent Democrat as a big-government liberal on Thursday, hours before Obama delivers his acceptance speech at the Democratic convention in North Carolina.
Ryan says Obama failed to reduce home foreclosures, raise incomes and reduce the national debt.
He addressed hundreds of supporters inside an airport hangar in Colorado, a swing state where Obama delivered his convention speech in 2008.
(KUSA-TV © 2012 Multimedia Holdings Corporation with The Associated Press)