Well, many Dems will be running, and Obama has completely steam-rollered them because there has been no opposition at all within his own party so they are identified with him. The fact that he acts entirely through executive orders and doesn’t even let the Dem legislators legislate must be a little galling to them, overall, combined with the fact that he then blames them for his bad moves.
That said, I’m not even sure the voting public will remember this next year. They will just accept the chaos and misery as one more thing brought to them by the Glorious Leader who knows best, and vote Dem as usual.