Super Tuesday

With more than 400 delegates at stake, Republican candidates battled it out across 10 states in a fraught Super Tuesday contest.

Voter sticker from Ohio. Photo: Flickr/Kim Keegan

Super Tuesday elections 

Voter sticker from Ohio. Photo: Flickr/Kim Keegan

Mitt Romney speaks at the Romney headquarters in Boston. Photo: Sarah Mongeau-Birkett/BU News Service

The frontrunner 

Mitt Romney speaks at the Romney headquarters in Boston. Photo: Sarah Mongeau-Birkett/BU News Service

A voter in Montpelier, Vt., casts his ballot in the Republican presidential primary. Photo: AP Photo/Toby Talbot

Cast your ballot 

A voter in Montpelier, Vt., casts his ballot in the Republican presidential primary. Photo: AP Photo/Toby Talbot

Former House Speaker Newt Gingrich speaks at the U.S. Space and Rocket Center in Huntsville, Ala. Photo: AP Photo/Evan Vucci

The survivor 

Former House Speaker Newt Gingrich speaks at the U.S. Space and Rocket Center in Huntsville, Ala. Photo: AP Photo/Evan Vucci

Eisley Collins, 2, snacks next to a Ron Paul sign at a Republican watch party in Oklahoma City. Photo: AP Photo/Sue Ogrocki

Future voter 

Eisley Collins, 2, snacks next to a Ron Paul sign at a Republican watch party in Oklahoma City. Photo: AP Photo/Sue Ogrocki

Republican presidential candidate Rick Santorum speaks at Steubenville High School in Steubenville, Ohio. Photo: AP Photo/Eric Gay

The surprise candidate 

Republican presidential candidate Rick Santorum speaks at Steubenville High School in Steubenville, Ohio. Photo: AP Photo/Eric Gay

The Copley Library polling station in Boston. Photo: Sarah Mongeau-Birkett/BU News Service

Everybody welcome 

The Copley Library polling station in Boston. Photo: Sarah Mongeau-Birkett/BU News Service

Republican presidential candidate Rep. Ron Paul of Texas addresses the crowd in Fargo, N.D. Photo: AP Photo/Charles Rex Arbogast

The outsider 

Republican presidential candidate Rep. Ron Paul of Texas addresses the crowd in Fargo, N.D. Photo: AP Photo/Charles Rex Arbogast

Arlington Town Hall in Arlington, Mass. served as a polling station for two town precincts on Super Tuesday. Photo: Dana Hansen/ Boston University News Service

'It's your civic duty' 

Arlington Town Hall in Arlington, Mass. served as a polling station for two town precincts on Super Tuesday. Photo: Dana Hansen/ Boston University News Service

A group of Ron Paul supporters display signs outside of the Beech Street Center in Belmont, Mass. Photo: Hyunah Jang/ Boston University News Service

The base 

A group of Ron Paul supporters display signs outside of the Beech Street Center in Belmont, Mass. Photo: Hyunah Jang/ Boston University News Service