The Romney revelation wasn't much of a surprise, was it? He was a passable governor in Massachusetts where his personal creepiness was in check.
Romney will not be elected President. In the next few months his support will decline. Conservatives don't like him any better than they liked McCain, and moderates are revolted by his behavior and lack of principles. Liberals will not sit on the sidelines. Obama will win, not in a landslide but by a comfortable margin.
The only reason Romney is the nominee is that the Republican Party has crossed a threshold. They can no longer field a candidate acceptable to the broad middle of the electorate that can pass muster with the party filtering mechanism, now in the control of people who used to inhabit the dark corners, locked in attics etc. It a God, gold and guns party, no one else is welcome and not many want to be.
There is a solution. We could move to nonpartisan reapportionment, which would force both parties to compete for the center. It's a state level fix, so it will take time to implement, but I think it's coming.