NORFOLK, Va. (AP) -- Republican presidential candidate Mitt Romney will announce his running mate Saturday morning in Norfolk, Va., his campaign said Friday night.

The short list of candidates - if there is one - is believed to include Ohio Rep. Rob Portman, former Minnesota Gov. Tim Pawlenty and Wisconsin Rep. Paul Ryan. In a statement issued Friday night, the Romney campaign said the running mate would be revealed at 9 a.m. EDT at the Nauticus Museum. Romney is kicking off a four-day bus tour through swing states.

Speculation has focused in recent days on Ryan, the seven-term congressman. Conservative pundits have been urging Romney to choose Ryan in large part because of his authorship of a House-backed budget plan that seeks to curb overall entitlement spending and changes Medicaid into a voucher-like system to save costs.

Pawlenty was maintaining his Saturday schedule campaigning for Romney in New Hampshire, an official close to Pawlenty's political team said. The person spoke on the condition of anonymity because the person was not authorized to speak ahead of the formal announcement.

The Wall Street Journal, in an editorial on Thursday, praised Ryan as a strong choice for Romney: "The case for Mr. Ryan is that he best exemplifies the nature and stakes of this election. More than any other politician, the House budget chairman has defined those stakes well as a generational choice about the role of government and whether America will once again become a growth economy or sink into interest-group dominated decline."

Romney's choice comes as he tries to repair an image damaged by negative Democratic advertising and shift the trajectory of a campaign that's seen him lose ground to President Barack Obama. Read on...

UPDATE: It appears my wish may have come true and that Romney is going to pick Ryan. I guess we'll see once the announcement is made in the morning. In the mean time, here's the crew over at MSNBC pretending that Ryan's budget policies don't matter all that much because as David Gregory let us know, some in the Republican party consider him a "visionary." If anyone wants a preview of what Meet the Press is likely to look like this Sunday, I'd say you've got one with this late night coverage of Romney's potential announcement of Ryan as his VP from MSNBC. Video below the fold.