Ensuring everyone can vote isn't a strategy it's democracy. They are simply countering the vote suppression efforts of the GOP. Nationwide more votes see cast for democrats at both levels of congress and for the presidency. This was even true at times when Republicans controlled all 3 levels of government. Republicans have manipulated the system to ensure minority rule through gerrymandering and abusing the electoral College. Obviously the real problem are the ignorant people that for for these clowns thinking they will do what they say.
Anyway, because of the GOP gaming the system, dems are digging for more votes, to win by an even wider margin, in hopes of being at equal power. How nice it would be to have the people's vote matter equally across the country.