For someone who endorsed Romney this is not a neutral opinion.
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When did he endorse Romney? It would have to have been very recently because up until yesterday, he had NOT endorsed anyone. Can you site a source for that please?
Romney was “endorsed in practice if not in declaration.”
http://hotair.com/archives/2012/01/25/rubio-to-romneys-rescue/
Santorum supporters don’t need no stinkin’ sources. /s