Trump was killing Biden in 2020 always ahead all day and night until suddenly, magically, around 4-6AM the next morning when everyone had been sent home, the democrats suddenly found just enough votes to win a couple swing states by 10,000 votes to take the election. Meanwhile, as is obvious now, no one likes Biden and the guy didn't even campaign.
No sitting president in history has ever GAINED 10 million more votes then still lost his reelection, much less to a bum.
Obumma LOST many votes in 2012 and STILL easily won reelection.