The Democratic Party can combat voter suppression by performing the constituent service that it forgot. Get people the ID they need to vote. Get people registered. Organize appointments for people to get a ride to the polls. Make it easy to vote!
We are not talking about confronting klan affiliated sheriffs and lynch mobs here. We are talking about navigating a little bureaucracy at the DMV or US Passport office and helping them get their documents and then driving them to the polls on election day.
This also might win some good-will from unreliable voters who see the party as helping them personally.
We waste hundreds of millions of dollars on television ads. If we put even $50M into getting ID’s for 1M Americans in key states and districts, we’d make a big impact.