Much holdover of key management. No radical rocking of policy, more continuance of same rather than change. Completely unnecessary "bi-partisan" appointments despite electoral wishes/mandates.
The hard-core remnants of both parties will be spun off as specialty shops - "Teabaggers" on one side "Old-fashioned Liberals" on the other. Makes for good theater. The stances of the candidates of the two parties will become increasingly difficult to differentiate. The bare minimum legislatively will be passed by either/both parties and they will blame the other for obstructionism. They will all grant each other plausible deniability for why we end up with the crap legislation we will get for time immemorial.