It’s a homecoming of sorts for the White House field today, as three of the four GOP hopefuls head to parts of the country they could consider their base of support.

Former Massachusetts governor Mitt Romney (Nicholas Kamm/AFP/Getty Images)

The two GOP contenders with the most riding on today are Santorum and Gingrich, for whom a win in Georgia’s March 6 primary isn’t a sure bet. Santorum has been playing up his blue-collar roots and is also seeking to make inroads with Ohio tea party supporters; one Santorum supporter at the candidate’s Friday night event in Columbus estimated that “about 65 to 70 percent” of tea-party supporters back the former senator. Will that be true this morning?

Ron Paul, meanwhile, is out in Idaho, becoming the fourth White House hopeful this week to visit the Gem State in the hope of securing a win in the Super Tuesday caucuses.

A look at today on the trail (Courtesy of candidate schedules and the PBS NewsHour Political Calendar; all times Eastern):

9:45 a.m.: Rick Santorum addresses the Hilliard Tea Party Rally in Columbus, Ohio

10 a.m.: Newt Gingrich holds a town hall in Cumming Parkway, Ga.

11:30 a.m.: Newt Gingrich holds a town hall in Suwanee, Ga.

12 p.m.: Rick Santorum addresses the Ohio Christian Alliance luncheon in Columbus, Ohio.

2:30 p.m.: Ron Paul holds a rally in Boise, Idaho.

3 p.m.: Newt Gingrich holds a rally in Atlanta, Ga.

6:30 p.m.: Rick Santorum addresses the Summit County Lincoln Day Dinner in Akron, Ohio.

6:55 p.m.: Mitt Romney attends a 2002 Winter Olympics 10th Anniversary reception in Salt Lake City, Utah.

8:30 p.m.: Ron Paul holds a rally in Kansas City, Mo.

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