They promise them the moon then leave town. Works like a charm and the desperate people foolishly believe the Democrats to their detriment. It worked for Obama who made things worse for the working poor while telling everyone he made things better.
Trump is the messiah for the working poor because he will help create new businesses that will provide meaningful higher paying jobs and get more people out of the poverty trap created by the Democrats. Democrats want power and they get it by getting poor and middle class Americans to vote Democrat because they believe the Democrats will give them free stuff.