Gingrich’s fans say that he isn’t the same man he was then; he has “matured” in his 60s. Maybe so. But he’s still erratic: This year he flip-flopped three times on the top issue of the day, the House Republican plan to reform Medicare. He’s still undisciplined: He went on a vacation cruise at the start of his campaign. He still has the same old grandiosity: In recent weeks he has compared himself to Ronald Reagan and Margaret Thatcher and said confidently that the nomination was his.

He still has the same need to justify his every petty move by reference to some grand theory. Plenty of politicians competing in Iowa come out for ethanol subsidies; only Gingrich would proclaim that in doing so he was standing up to city slickers in a culture war invented in his own mind. He still has a casual relationship with the truth. In recent weeks he has said that Freddie Mac (FMCC) paid him to condemn its business model, only for reporters and bloggers to find out that he had in fact shilled for the organization in return for about $1.6 million.

He still has the same penchant for sharing whatever revelation has just struck him, as with his recent musings about getting rid of child-labor laws. “He goes off the deep end and throws things out there,” says Joe McQuaid, the publisher of the Manchester Union Leader, which has endorsed Gingrich. He means it as a compliment, but it doesn’t strike me as one of the top traits to seek in a president. Many voters may have the same reaction.