2020. Hope I live to see it.
Mark my words. Mittens doesn't have the capacity, nor the deep seated core convictions to shift right in any significant way. He's going to try to govern as a moderate, which will take us down the same path as the Bush's.
He's a man of an obsolete and defunct paradigm, which will not play well with an electorate that is suffering the realities of the present. When he should be reading the TEA leaves, he'll be listening to the corrupt power brokers in Washington.
That will result in a guaranteed challenge from the right in 2016, and I expect that challenger to be Sarah Palin.