"The Romney plan has been pretty vague, so it's hard to say how much of it is the same as Ryan's," said Bob Bixby, the executive director of the nonpartisan Concord Coalition, a budget watchdog group. "I would just assume that Romney's plan is Ryan's plan."
There's little reason to pick Ryan as a running mate if you aren't choosing his detailed deficit-reduction plan with the Medicare centerpiece, Bixby said.
"Paul Ryan is on the ticket because of his budget," he said. "Without Paul Ryan's budget, he would not be a credible pick." It's implausible to think Romney would have selected Ryan "without being pretty much on point with his budget," Bixby said.