David Frum: “It’s striking that almost none of Gingrich’s former colleagues in the House has endorsed him for president. Striking that nobody associated with a past Republican presidential association has done so. He is a candidate of talk-show hosts and local activists — and of course of Rick Perry and Sarah Palin — but not of those who know him best and have worked with him most closely. Gingrich may raise more money after his South Carolina win. But prediction: Romney will raise even more, among the great national network of Republicans who recognize that to nominate Gingrich is to commit party suicide.”

