This flip-flopping happens because there is no commonality to find. One of the only (effectively) two major political parties of the United States is completely uninterested in governing. They have no policy. They have no plan for governing; they don't like governing. Their only goal is the piecemeal selloff of government powers to the highest bidder, and they convince their stalwart followers of this by making sure…
This is sort of a democrat neolib explanation that's only possible if you ignore the corrupting effects of capitalism and the unending class struggle between workers and capital, regardless of party. The GOP isn't some weird guys who can't govern, but an incredibly powerful group that works almost exclusively for the capital owning class and uses social issues to empower that class. The GOP caters a bit to the worker…
They don't cater to them as much as they convince them that they could one day be a member of the capital owning class.
The whole "temporarily embarrassed millionaire" line.