MANCHESTER, N.H.—Channeling Yogi Berra, Republican presidential candidate Herman Cain told a packed crowd of campaign volunteers at the storefront office that serves as his New Hampshire headquarters Wednesday evening that as he reevaluates his campaign, he’s not ready to call it quits.

“There were some people who thought that I was finished. But I’m going to leave it with Yogi Berra’s comment,” Cain told the enthusiastic crowd, “It ain’t over ‘til it’s over. And it ain’t over yet.”

“Not by a long shot!” one volunteer shouted in response.

On Monday, an Atlanta woman alleged that she had a long-term affair with Cain, while knowing he was married. She said the relationship ended eight months ago, as Cain began his run for president.

Cain denies the affair and has accused the woman, Ginger White, of fabricating the story, perhaps at the behest of establishment figures who want to end his candidacy.

Cain told reporters in Manchester that, though he’s talked with wife Gloria since White stepped forward, he has not yet seen her in person. Part of a reassessment of his campaign will be to speak with directly with her this weekend, he said.

“Since I’ve been campaigning all week, I haven’t had the opportunity to sit down with her and walk through this with my wife and my family. I will do that when I get back home on Friday,” he said.

Cain spent Wednesday alternating between a defiant campaign stop in Ohio, where he told supporters he would not be chased from the race by what he termed character assassination, and media interviews in which he acknowledged he is reassessing the status of his campaign.

In Manchester, N.H. in the evening, he told reporters and supporters that he was reevaluating his effort and would make a decision about how to proceed with his campaign within the next few days, after discussing the issue with his family, taking the temperature of supporters and judging whether the allegations have hurt fundraising.

“It’s going to take another few days,” he said. “Because as a businessperson you don’t do a knee-jerk reaction. You collect all the facts, you evaluate all the facts, you consider all the information you need before you make a decision.”

Cain received a warm greeting from New Hampshire supporters, who shouted that they loved him. “Make her prove it!” one woman shouted as he entered the room.

“I think the country will be poorly led if we push out a person because of some innuendo,” said Stephen White, 78, a resident of Sunapee, N.H.

But some volunteers said they were doing some reevaluating of their own.

Active supporter John O’Brien of Hudson, N.H. said that although he’s convinced Cain is being unfairly accused, he fears the charge may have wounded the campaign.

“I’m still struggling it out,” he said. “He said he’s going to think about it for a couple of days. So I’m thinking about it for a couple of days.”