AP
The field of Republican presidential candidates is starting to narrow -- and the top contenders for the GOP nomination are beginning to log serious time on the campaign trail.
As they travel the country catching up with voters everywhere from state fairs to local cafes, CBS News presents photographic evidence of how - and where - the candidates are spending their time on the trail.
AP Photo/Charlie Neibergall
Bachmann talks with Abraham Lincoln impersonator Lance Mack of Marion, Iowa, at the Black Hawk County Republican Lincoln Day Dinner, Aug. 14, 2011, in Waterloo, Iowa.
AP Photo/Charles Dharapak
Former Massachusetts Gov. Mitt Romney gives a service dog a snack as he meets visitors while campaigning at the Iowa State Fair in Des Moines, Iowa, Aug. 11, 2011.
AP Photo/Charles Dharapak
Texas Gov. Rick Perry and wife Anita head back to the campaign bus after a stop at D.C. Taylor Roofing in Cedar Rapids, Iowa, Aug. 16, 2011.
AP Photo/Charlie Neibergall
Supporters cheer Paul after he spoke at the Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.
AP Photo/Charles Dharapak
Gingrich and his wife Callista grill pork chops as they visited the Iowa Pork Producers tent during a campaign stop at the Iowa State Fair in Des Moines, Iowa, Aug. 12, 2011.
AP Photo/Jim Cole
Former Utah Gov. Jon Huntsman, Jr. speaks with Sara Brothers, left, and Rebecca Brothers of Tilton, N.H. during a campaign stop at the Barley House restaurant, Aug. 12, 2011 in Concord, N.H.
Grace Beahm,AP Photo/The Post And Courier
Presidential hopeful, Michele Bachmann, speaks to supporters on Aug. 19, 2011 in Mount Pleasant, S.C.
AP Photo/Charlie Neibergall
Former House Speaker Newt Gingrich greets Iowa Republicans during the Iowa Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.
AP Photo/Charles Dharapak
Former Pennsylvania Sen. Rick Santorum and his wife Karen walk behind a bagpiper at the GOP Ames Straw Poll in Ames, Iowa, Aug. 13, 2011. Thousands of Iowa Republicans mingled with presidential hopefuls on a college campus in the first test to see how the candidates trying to unseat President Obama are faring with the GOP base.
AP Photo/Charles Dharapak
Perry speaks at the Iowa State Fair in Des Moines, Iowa, Aug. 15, 2011.
AP Photo/Charles Dharapak
Businessman Herman Cain campaigns at the Iowa State Fair in Des Moines, Iowa, Aug. 12, 2011.
AP Photo/Cheryl Senter
Michael Ewing, left, of Nashua, shakes hands with Huntsman at a breakfast at American Legion Post 3 in Nashua, N.H., Aug. 13, 2011.
AP Photo/Jim Cole
Romney speaks during a town hall meeting at the cities Recreation Center in Keene, N.H., Aug. 24, 2011.
AP Photo/Charlie Neibergall
Rep. Ron Paul, R-Texas, speaks during the Iowa Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.
AP Photo/Charlie Neibergall
Cain speaks during the Iowa Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.