Levin is also the editor of Conservative Review. You might be interested in their Presidential Scorecard, which rates one particular candidate more highly than the rest. His name is Ted Cruz.
Conservative Review: Presidetial Scorecard
Like you, I believe Levin (and Rush) is friendly toward Rubio -- a slick talker and evidently a charming personality, a la Bill Clinton -- but is now leaning toward Cruz because of his fundamental conservatism.
I don’t care about Levin’s scorecard. We each have issues that are important to us, and I suspect Levin is biased toward Cruz anyway.
If Levin is really for Cruz, he should promote take down of Carson by whoever. Because Carson is costing Cruz Evangelical votes. Either Levin is not a good strategist or he has TDS.