Given the Democrats are becoming more and more pro-business-- as in, will defend the multi-billion entity to death if it has a pride flag variant on its logo-- I predict a subtle shift in the dynamics to one where the Dems attract people that want control (be it governmental or private) because they deem it necessary to safeguard whatever rights and privileges their secondary identity groups fall into, while Republicans maintain a focus on personal and economic autonomy, even if it's only the rich that get the tax cuts.
I think regardless of 2020's result, Trump is just the symbol of whats to come electorally. The West Coast, the South-west border states, and the Atlantic Metro will be solidly democrat due to status quo politics + 20 more years of demographics.
Meanwhile, Republicans maintain a lot of what they've currently got. They may lose Florida as a battleground state and Texas will go purple, but in order to survive they need to replace that with the Rust Belt. Michigan and Ohio already nearly make up for losing Texas on their own. Consolidating the north alongside their other southern and fly-over states is a viable coalition, with an emphasis on economic prosperity and attention for people that clearly haven't been getting any from the Democrats (unless it's about dirty water or gun crime)
This is probably why the DNC like Biden. He stalls this transformation for a bit because unlike Hillary, he won't list off the various minority groups he's gonna advocate for, he harkens back to an almost-comically old style of politics that used to resonate with people. If the Democrats can find a way to inhibit Republicans from conquering the north then they've got it in the bag.. They've already got 250 EC seats secure, so low turnout by black people or Latinos doesn't hold a candle to the, what? 80 EC seats in the Rust Belt that are feasibly flippable.
It's sort of ironic that the Democrats are eagerly awaiting it, and the Trumpian Republicans see it as an apocalyptic inevitability, but the USA become white minority by 2050 will just make it's electoral politics more white-focused than ever. Most black people, asians and hispanics are gonna thoroughly solidify the allegiance of states in the North-east, South and West, leaving the what? 80+% white states in the Rust Belt with the attention of both parties as the kingmakers for the foreseeable future.
that's how I predict at least one future election to go. Maybe Venezuela will suffer an exodus of millions of anti-communists and permanently redden Texas? The future hinges on the RNC and DNC's immediate strategies whether they make sense or not