Complacent

It may be that the Trumpies believed their own propaganda, and became complacent. I like this analysis:

Observing the US elections from Europe with a very cynical eye (and getting even less sleep than your journalists), I get the impression that the Trump team made a miscalculation in its cynical and well-prepared attempt to steal the election: they set the stage perfectly by pre-emptively badmouthing mail-in votes in their communication, encouraging their own voters to turn out in person, and barring pre-election ballot counts; but they must have expected a slower count. Both their court action and their Brooks Brothers Riot 2.0 (which I was expecting with 100% certainty) came too late to prevent the flips; in Detroit’s case, too late to prevent Biden’s lead from moving well past recount territory. From the communication of election boards, I also get the impression that this miscalculation was because they didn’t consider the effect of their rhetoric on the election boards themselves: no one wants to be at the centre of a media storm like in Florida 2000, so people did everything to speed up the count.