The ultimate conclusion Klein reaches is that Romney will be shaped by his circumstances, just like he always has. Klein writes:
"One thing Romney emphasized over and again was the need to hammer out his policy agenda through negotiations with Congress. And that, I think, provides the answer. If Romney is facing a Democratic Congress that demands compromise in return for votes — the same situation he faced in Massachusetts — he’ll be more like the Massachusetts moderate he presented as last night. If he’s facing a Republican Congress that’s pulling him to the right and threatening to reject his proposals and force him into a primary in 2016, he’ll be more like the candidate we saw in this year’s primaries and throughout much of this campaign."