Mitt Romney is improving his standing with very conservative voters. The Post reports: “Now, 64 percent of the most conservative Republicans and independents express favorable views of Romney, up from a low of 43 percent three weeks ago. The number rating him unfavorably is well off its peak. At 70 percent positive, and 14 percent negative — 11 percentage points fewer than Romney — [Rick] Santorum still has the edge here, particularly when it comes to intensity, but it’s narrower than it was three weeks ago.”

The Post’s polling guru Peyton Craighill told me that, when it comes to Republicans other than very conservative, the favorable/unfavorable balance is 61/27 percent for Santorum (12 percent still don’t know enough about him) and 55/36 for Romney.

This doesn’t mean that 64 percent of very conservative voters will select Romney in a primary. But it does indicate that he is making inroads with that segment of the electorate. Moreover, this also suggests that while more Republicans (very conservative and otherwise) may have a favorable impression of Santorum, a high percentage of those voter also have a favorable impression of Romney.

If Santorum continues to fall further behind in delegates, it will be interesting to see if Romney’s favorable ratings go up, a sign that voters are coming to terms with a Romney nomination.