[dvwjr]

Going back to the Presidential elections of say 1920 here are the greatest single Popular vote victories of the various Presidents:

“%” “Year” “President”

26.23 1920 Harding
25.21 1924 Coolidge
24.26 1936 FDR
23.15 1972 Nixon
22.58 1964 LBJ
18.21 1984 Reagan
17.43 1928 Hoover
15.40 1956 Ike

dvwjr

[SmokingJoe]

Nobody’s come anywhere close to any of that kind of winning margin since Reagan in 1984. The closest being Bush Snr beating Dukakis by 10%, which was in part from the Reagan magic.

Even as an incumbent, Obama only managed to beat Romney by 2.98% in 2012. Despite Obama using the IRS to terrorize Romney supporters or anyone who made political contributions to Romney or the TEA parties.
With his abysmal enthusiasm gap deficit to Trump it's hard to even conceive of Biden winning at all, let alone winning by a fantasy land 15% as CNN is insisting he will.