You do it by overwhelmingly knocking out the GOP so that there’s room within the blue wave for more progressive candidates.
If, somehow, the Democrats swept with some insane margins, the GOP in its current form would need to evolve or die.
When a race is this close, the Democrats will always move to the center.
Oh is this the new angle the GOP is trying? How about a guaranteed voting location for every X citizens? No more hours long line in cities, and no more voting location at every retirement home. How about a national holiday for Election Day?