[wastedyears]

I’m only 26, so feel free to scold me, but has this ever happened before?

[fieldmarshaldj]

Ford dumped Rockefeller in ‘76. JFK was gonna dump LBJ in ‘64. FDR dumped Henry Wallace in ‘44, etc., etc.

[ontap]

NO! We are in uncharted waters when it comes to ineptness and stupidity. It is really hard to be in a position in public service and have your partner constantly making an ass of himself....I thought until recently Joe had been handling it well...rim shot!!!

[Ditto]

I’m only 26, so feel free to scold me, but has this ever happened before?

It's happened a number of times including under Jefferson, Madison, Lincoln, and FDR with the most recent example being Angew's resignation of the VP job in 1973 under Nixon.

Then there was the Eagleton controversy back in 1972 when Democrat presidential nominee George McGovern replaced his VP nominee, Sen Tom Eagleton, midway through the campaign when Eagleton's history of psychiatric problems came to light.