So Trump was elected in 1948? Korea probably still happens. A Biden who's been in government since around 1910 would have to be a segregationist, and for parallelism maybe one of Roosevelt's vice presidents before Truman, so I'm guessing his running mate would have to be a liberal not-Southerner. The 1950s electorate would respond much more negatively to Trump and positively to Status Quo Joe.
President Donald Trump (R-FL) / Vice President Charles Halleck (R-IN)
Fmr. Vice President Joe Biden (D-DE) / Senator Warren Magnuson (D-WA) ✓
