With the race essentially down to two leaders in both the Republican and Democratic parties, voters also expressed wonder at the novelty of the field of candidates still standing.
On the Democratic side, there were a woman and a black man -- New York Sen. Hillary Rodham Clinton and Obama. For the Republicans, there were a Mormon and a 71-year-old former prisoner of war -- Mitt Romney and Arizona Sen. John McCain.
In Chappaqua, N.Y. -- Clinton's backyard -- Stephen Piccininni said he voted for McCain because he had the most experience.
"McCain is able to say what has to be said," he said. "He's someone who knows the process and I think has the right solutions for Iraq and the economy. He's the right guy for that."
The Super Tuesday slate included primaries and caucuses in 21 states for the Republicans and 22 states for the Democrats. And at least one of them took place, in part, in a hot dog joint.
That would be Chicago's U Lucky Dawg, which doubles as a polling place. Voters there were undeterred by both a technical glitch that left just one touch-screen machine working or the 6-foot frankfurter draped in an American flag that loomed nearby.
At the restaurant, David Turow, a 52-year-old accountant who has served as an election judge since he was 18, made note of what he called unprecedented voter enthusiasm.
"I just feel we live in this country, we should exercise our rights, you know?" he said. And as voters walked out, he said cheerily, "See you in November."