This year's electoral successes carry some risks for the Democrats. One is the risk of deluding them into thinking that people actually like them, as opposed to disliking the Republicans. Another is the risk of thinking that people who do like them now will continue to do so months, years,
even decades from now. For an astute note of skepticism about current Democratic triumphalism, see David Freedlander's "
Democrats See a Future of Electoral Dominance But History Says Otherwise."