Based on exit polls conducted by Edison Research with voters in 14 states.

Each dot represents one demographic group.

Iowa With more candidates to choose from here, exit polls were more diffuse than in states that voted later. Mr. Santorum's strongest support came from voters for whom abortion was the main issue, as it was in many states. Iowa results »

New Hampshire Mr. Romney easily carried the state, but Ron Paul, who finished second, had strong support from young voters and voters for whom a strong moral character was important. New Hampshire results »

South Carolina Newt Gingrich made his strongest showing of the early campaign season here, especially among voters who valued "true conservatives" or were skeptical of Mr. Romney's business background. South Carolina results »

Florida Mr. Romney carried the state easily, and voters of nearly every demographic group preferred him to Mr. Santorum. Florida results »

Nevada Not surprisingly, Mr. Romney's strongest supporters were Mormons, but he also carried the evangelical vote here. Nevada results »

Arizona Voters here who valued business experience preferred Mr. Romney nearly 3 to 1. Arizona results »

Michigan In one of the closest contests of the campaign so far, Mr. Romney carried Michigan by about three percentage points, while Mr. Santorum continued to receive support from voters concerned with religious issues, abortion and supporting a true conservative. Michigan results »

Ohio Some of Mr. Romney's strongest support in this close race came from voters who cared most about electability in the general election. Ohio results »

Massachusetts Mr. Romney's biggest victory so far came in the state he once governed, with his strongest support coming from older voters and those concerned with defeating President Obama in the general election. Massachusetts results »

Tennessee Mr. Santorum carried 65 percent of the vote among voters who thought strong moral character was the most important quality in a candidate. Tennessee results »

Georgia Newt Gingrich won his home state handily, his only victory of Super Tuesday. Georgia results »

Alabama Though Mr. Santorum won the primary, preferences varied widely in Alabama. Voters who cared about electability in the general election strongly preferred Mr. Romney; voters who valued experience most strongly preferred Mr. Gingrich. Alabama results »

Mississippi Neither Mr. Gingrich nor Mr. Santorum was the clear favorite among very conservative voters, while Mr. Gingrich was most popular among voters who valued experience. Mississippi results »

Illinois Mr. Romney not only won among the groups that usually support him — moderates, college graduates and wealthier voters — but also was competitive among Mr. Santorum’s generally more loyal coalition of Tea Party supporters and married women. Illinois results »

Groups located closer to the bottom of the triangle were more likely to vote for a candidate other than Mr. Romney or Mr. Santorum.

Iowa

N.H.

S.C.

Florida

Nevada

Arizona

Michigan

Ohio

Mass.

Tenn.

Georgia

Ala.

Miss.

Ill.