Discuss as:

2012: It's on

NBC's Mark Murray and Domenico Montanaro discuss Mitt Romney's choice of running-mate Paul Ryan and what it means for the state of the presidential campaign.

“Newly tapped Republican vice presidential contender Paul Ryan is facing off against President Barack Obama as the front lines in the battle for the White House shift to Iowa,” AP writes.

As one of us wrote over the weekend, Obama’s been campaigning against Ryan and House Republicans for more than a year – and sometimes it’s gotten personal. Obama’s very familiar with Ryan’s plan and has gone in great detail. Expect to hear more of it.

“The race for the White House remained in a dead heat just before Mitt Romney announced Paul Ryan as his running mate, a new Politico/George Washington University Battleground poll finds.” Obama and Romney are in a statistical tie, with Obama ahead among likely voters, 48-47%.

And there’s this: “[Romney’s] unfavorables are the highest of any Republican nominee at any point in recent history,” said Democratic pollster Celinda Lake, who helped conduct the poll.

Could Ryan help Romney appeal to younger voters… USA Today calls him the X factor. Maybe that’s Generation X Factor, or P90X Factor.

Romney’s out with another ad hitting Obama on welfare, making similar charges to his last ad which was widely discredited.

The Obama campaign is already out with a web video citing Floridians hitting Romney-Ryan on Medicare.

Here’s Restore Our Future’s latest.