It's not social stuff. A lot of Americans are socially conservative, but social progressives and social libertarians (live and let live types) together make a clear supermajority. The problem isn't that Americans are socially conservative, it's that a large number of people have the notion that Republicans are good for the economy and Democrats are bad for the economy, and that therefore when things are economically rough they should vote in the Republicans. This group of people play a large role in why Congress flips so often.