This morning Michelle Malkin declared for Santorum. She has a fairly thorough listing of her reasons, and considerations both for and against him. I don't normally read Ms. Malkin -- I saw her endorsement linked on Memeorandum -- but it is good to see one of the big players join in on his side.
UPDATE: Santorum gave a pitch in Minnesota at which he was asked how he would win among moderates. That's been a challenge to him raised here, too, so you might be interested in his answer.
Only toward the end did a process question get asked, when a caller politely challenged Santorum to explain how he’d win moderates. Santorum replied that moderates don’t tend to be issues voters, but respond to enthusiasm and momentum, and that the important task was to rally the base as happened in the midterms. Neither Romney or Gingrich are consistently conservative enough to do that, Santorum argued, while his record gave the GOP the best chance to stoke conservative enthusiasm. He also said that he had a track record in Pennsylvania of winning Reagan Democrats, which he would do throughout the Rust Belt and Midwest. “Will I lose California by a wider margin than Romney?” Santorum asked, and replied that he certainly would — but losing California and New York by a marginally smaller amount won’t do the GOP any good in November anyway. Santorum insisted that he could do better in the center of the country than any other Republican, and that would make the difference in November.