As reported by The Guardian, www.theguardian.com/... rethuglicans are engaged in massive voter purges, nationwide— notably in Wisconsin, Ohio, and Georgia.
Unless the Democratic Party finds a way to contravene these purges, they will have a massive — likely decisive— effect on the presidential election of 2020.
I am unaware of any action by the Democratic Party in this regard; perhaps others at this site are better informed and can enlighten me.
The Democratic Party has been notoriously bad at fighting this sort of criminal chicanery; I hope they will awaken in time to take action.