Dina Rudick/Globe Staff

Voting officials said that turnout was steady at the Cawley Middle School in Hookset, N.H.

David L. Ryan/Globe Staff

Mitt Romney and his wife, Ann, greeted voters outside the Webster School polling station in Manchester, N.H.

David L. Ryan/Globe Staff

Romney supporters were also at the polling station.

David L. Ryan/Globe Staff

Earlier this morning, Newt Gingrich and his wife, Callista, also made an appearance at the same polling station in Manchester.

Evan Vucci/AP

Che Sayles, a Barack Obama supporter from Greenbelt, Md., stood out among GOP volunteers outside the Webster School.

Essdras M Suarez/Globe Staff

John Huntsman and his wife, Mary Kaye, stopped by the Woods School polling station in Manchester, N.H.

Essdras M Suarez/Globe Staff

Ron Paul was escorted through the crowd at the Woods School polling station.

Essdras M Suarez/Globe Staff)

PETA activists dressed as pigs drove by the Woods School polling station.

Shannon Stapleton/REUTERS

Voting was a family affair for Rebecca Stuart and her husband, William, in Loudon, N.H.

Jessica Rinaldi/Reuters

Residents voted at the Stark Volunteer Fire Department in Stark, N.H.

Yoon S. Byun/Globe Staff

Voters made their way to and from the voting booths at Londonderry High School in Londonderry, N.H.

Yoon S. Byun/Globe Staff

Outside of Londonderry High School, volunteers supported their candidates with signs and handshakes for incoming voters.

Yoon S. Byun/Globe Staff

Ken Akiyama, left, of Derry, spoke to voters about Ron Paul as they entered Hood Middle School in Derry, N.H.

Jessica Rinaldi /Reuters

As primary day got started, Cheryl Lord, left, and Yvette Bilodeau hung up a sign at a polling station in Errol, N.H.

Mike Segar/REUTERS

A primary election ballot was ready to be filled out in Nashua, N.H.

Brian Snyder/REUTERS

A sign made it clear where campaigning was and was not allowed at a Manchester, N.H., polling station.

Matt Rourke/AP

Donna Kaye Erwin looked at the total votes in Dixville, N.H.

Matt Rourke/AP

Dixville, N.H., residents, from left, Donna Kaye Erwin, Tanner Tillotson, Peter Johnson, and Jacques Couture waited for midnight to cast their votes.