I suspect that the Democrats will have a brief but spectacular run at messing up the economy or getting us into some nasty foreign entanglement. In a burst of overreach not unlike the passing of Obamacare (“We have to pass the bill in order to find out what’s in it.”), they will quickly find themselves in a-bridge-too-far land. It’s inevitable because they simply cannot follow the wisdom in Oscar Wilde’s bon mot: “One should always play fairly when one has the winning cards.” They cheat even when they don’t have to.
The next couple of years are going to be brutal. The following two won’t be much better.