Just released! Here's a key bit from the report but please check out the whole thing. There's a lot of grist for your mill, no matter what kind of mill you're working with.
"The wide range of scenarios considered here mostly have Democrats in 2020 maintaining and, in many cases, strengthening their popular vote victory from 2016. Indeed, in only two cases do the authors actually see a Republican popular vote victory in 2020: a 10-point pro-GOP margin swing white noncollege-educated voters and a 10-point pro-GOP margin swing among white college graduates—and, in the latter case, only if the third-party vote is reallocated.
Since Democrats registered popular vote advantages in almost all scenarios in 2020, it should be no surprise that they do so for later elections as well. In the projections that show a Democrat popular vote advantage in 2020, Democrats achieve even greater margins in each subsequent election as the projected demographic makeup of the eligible electorate continues to shift in a direction generally favorable to Democrats.
But, critically, it is electoral votes based on state outcomes, not the nationwide popular vote, that determine the winner in presidential elections. As this discussion details, many Democratic popular vote victories in these simulations do not translate into Democratic electoral vote victories.
In the 2020 election, these simulations include a scenario where Republicans gain a 15-point margin swing in their favor among Latinos, Asians, and those of other races, and a number of scenarios where the education gap among whites plays a key role. The following scenarios result in a GOP Electoral College victory but a popular vote loss: The GOP gets a 5-point margin swing from white noncollege-educated voters twinned with an equal swing toward the Democrats among white college-educated voters; a 10-point swing in Republicans’ favor among white college graduates; and a reversion to 2012 support margins among white college-educated voters. The exception to this pattern is the scenario in which Republicans gain a 10-point margin swing from white noncollege-educated voters, where the GOP carries both the Electoral College and the popular vote. Finally, simply leaving turnout and voter preferences as they were in 2016 while demographic change continues, yields a probable Republican Electoral College victory—though popular vote loss—if the third-party vote reverts to 2012 levels.
Thus, the GOP has many roads to the presidency in 2020 even though demographic shifts appear to make a Democratic popular vote victory easier than ever to obtain. Even more interesting, some of these fruitful scenarios continue to produce Republican electoral vote triumphs in 2024 and beyond, despite mounting popular vote losses."