Every so often, the political party landscape has changed in the US. Perhaps we will see the start of one of these periods as the Republican party might choose

Every so often, the political party landscape has changed in the US. Perhaps we will see the start of one of these periods as the Republican party might choose to "return to their base" and thus exit the middle. Assuming the Democrats ALSO return to the base (rather than perform a New Labor), the middle will be unsupported by either party. Get enough frustrated people and change might occur. Get them frustrated long enough and change will occur.