FAIRFAX, Va. — On the eve of Super Tuesday, as Hillary Clinton urged her supporters to turn out to vote, people on the sidelines of her campaign rally here seemed less revved up than resigned.

The time had come, several said, to end their romance with Bernie Sanders and settle down with Mrs. Clinton.

“Bernie Sanders’s odds of getting the nomination are maybe not that great,” said Mitchell Westall, 19, of Suffolk, Va., who added that he had been intrigued by the Vermont senator’s vision. “So I’m looking at the other Democrat.”

Mrs. Clinton, the former first lady, senator and secretary of state, is not used to being “the other Democrat.” But as voters cast ballots Tuesday in 11 states that could give her a prohibitive lead in the race for the party’s presidential nomination, she seemed to be enjoying something of a homecoming: After eyeing, enjoying and encouraging Mr. Sanders’s insurgency for months, Democrats seemed ready to restore to Mrs. Clinton and her candidacy the air of inevitability with which she began her campaign in April.