@realjohnboy,
It can be a big development even if Romney still wins the nomination, though.
A long-contested race means more time for the various candidates to try to tear each other down, doing the Democrats' work for them.
The 2008 Dem race was long-contested, but has two important differences.
#1, the Republicans were doing it at the same time.
#2, there was a lot more POSITIVE emotion about the two candidates (Hillary and Obama, both in and of themselves and what they stood for) than there is positive emotion towards any of these candidates.