They were winning the Senate prior to the convention. After the convention, McConnell went AWOL and Romney never extended coattails to campaign on a national message of sending a team to Congress to work with him as President.
Each state, each candidate, was left the themselves to win their seats.
Republicans went from being ahead in 7 races before the convention to losing 2 seats after the convention.
It was not because of flawed candidates. It was because of a failure by the party to create a national message that everyone ran on.
-PJ
I disagree. Their candidates stunk the place up. Case in point, Todd Akin. No hypothetical nationalized race would have changed that outcome.