Romney will avoid saying or doing much of anything of note before November if he can.

Even though he likes to pander, he won't pander with a big appointment like VP, it'll be someone predictable like Portman or Pawlenty.

If he can get away with mumbling platitudes but not committing to any position, such as on immigration issues, Arizona law/DREAM act etc., he will do so.

If he can avoid tough in depth interviews, he will do so and only go to events with supporters.

If polling shows him "in range" like within a few percentage points behind, he'll be fine with that.

To make up the difference and get over the hump, he'll rely on:

-A billion dollars worth of GOP SuperPAC negative ads saturating media in OH, FL, VA, NC, CO, NV etc.

-Voter suppression campaigns like Rick Scott's in as many GOP governed states as can be carried out.

The results of the voter purge/intimidation campaigns won't be seen until election night, but the media saturation ones WILL be seen in polling going up until the election.

It's only if the SuperPAC ad blitz doesn't show a sufficient effect getting him into range in OH and VA near election time that we might see him take any kind of chance or go out on a limb, but not under any other circumstances, I think.