On the trail in Iowa, N.H. and beyond

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.

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.

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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.

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.

Supporters cheer Paul after he spoke at the Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.

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.

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.

Former House Speaker Newt Gingrich greets Iowa Republicans during the Iowa Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.

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.

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Perry speaks at the Iowa State Fair in Des Moines, Iowa, Aug. 15, 2011.

Businessman Herman Cain campaigns at the Iowa State Fair in Des Moines, Iowa, Aug. 12, 2011.

Michael Ewing, left, of Nashua, shakes hands with Huntsman at a breakfast at American Legion Post 3 in Nashua, N.H., Aug. 13, 2011.

Romney speaks during a town hall meeting at the cities Recreation Center in Keene, N.H., Aug. 24, 2011.

Rep. Ron Paul, R-Texas, speaks during the Iowa Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.

Cain speaks during the Iowa Republican Party's Straw Poll, Aug. 13, 2011, in Ames, Iowa.