It's interesting how political endorsements are largely confined to a candidate's home state. I've been surprised that Leahy endorsed Bernie so quickly, given he supported Hillary in 2016, but maybe it was because Hillary just seemed inevitable, which is why Sanders had a few congressional endorsements.
There seems to be a strong tradition of supporting whoever runs from your state- McConnell endorsed Paul in 2016, Joe Kennedy has endorsed Warren and even Schumer endorsed Clinton in 08 despite them apparently hating each other.
In all fairness to Gillibrand she's never been a state politician (unlike Harris/Booker), and NY politics has a whole cluster of egos, petty feuds and people who are most happy in front of a mirror.
But it does reflect that her campaign is virtually dead on arrival.
