What does a new Democrat-dominated party system look like?

[Del Tachi]

So the coalition would be exactly what it looks like now

I'm talking about something sufficient to lock down the electoral college by New Deal Coalition margins. Something to end the polarization keeping the map stable and balanced, where the Democrats become a true majority party. As evidenced by Trump, a Republican can and will win in this environment given the right drop in turnout.

Democrats will never be able to win by New Deal-era margins as long as the two parties remain as ideologically sorted as they are today.  The Dem's massive wins in 1932-44 required the votes of conservative, Southern Democrats and agrarians. 

[Del Tachi]

So the coalition would be exactly what it looks like now

I'm talking about something sufficient to lock down the electoral college by New Deal Coalition margins. Something to end the polarization keeping the map stable and balanced, where the Democrats become a true majority party. As evidenced by Trump, a Republican can and will win in this environment given the right drop in turnout.

Democrats will never be able to win by New Deal-era margins as long as the two parties remain as ideologically sorted as they are today.  The Dem's massive wins in 1932-44 required the votes of conservative, Southern Democrats and agrarians. 

Right, and this is a thread about a hypothetical new party system in which that's possible.

Well then it's not possible unless Democrats are serious about courting Southern Evangelicals.