stop infantilizing the democrats
they calculated that they would endure 4 more years of trump and hope for a swing back in their favor and a "i told you so".
they didnt throw the election on purpose but they definitely 100% had a backup plan. they in no way ignored warnings or stumbled into this
they are cynical spoilers who are absolutely fine with allowing every manner of injustice and crime against the poor and working class to happen so long as in the long run their rich donor class is served