"Romney needs to make Obama the story now, not let Obama make Romney the story with innuendos, lies, and mis-reporting the news."
And he hasn't done very much to distinguish himself from Obama- it should be easy, really: Obama is the most leftwing president our country has seen in modern times. The whole argument behind Romney being the nominee- to the Establishment at least- was that he would appeal to moderate voters (and that was what Axelrude & Co. feared in him the most).
But if Romney wants to be the guy in the "middle", simple being passive and neutral is not the way to convince most people (if it was, he would be way ahead by now). Instead, he needs to point out how far Obama is trying to push this country to the left with his policies- against its will. If Obama is viewed as the candidate who is way too far to the left (which of course he is), there's only one place for voters to go...
The MSM tried to sucker Romney into announcing his VP choice early in order to give Obama new talking points. So far, it didn't work. The sooner that Romney announces, the sooner he will lose control of the news.
Romney will wait until after the Olympics to announce. If he's smart, he'll wait until the convention to announce in order to keep the Democrats from trying to control the messaging from Romney.
Since Democrats have their convention after Republicans, Obama will steal the momentum from Romney by announcing at the convention that he is replacing Biden with someone else.
The MSM will do their part from this point.
One tantalizing tidbit is that Obama has given the Wednesday night VP speech slot to Bill Clinton, not Joe Biden. Reportedly, Clinton will be the one to formally place Obama's name into nomination. Could it also be the plan for Bill to announce that his wife will take Biden's place on the ticket?