Because not to do so is political suicide.
But here != there.
As noted by some American analyst on Radio 4 this morning, the election in November is really all about 80,000 swing voters in 5 states.
Sanders is toxic to sufficient swing voters that he cannot win. Biden is likely toxic to Sanders voters (and herewith half the fuckin' problem; there's nowt the Left (relative or otherwise) enjoys more than shouting "splitters!" at people whose goals largely align with their own), but can attract the floaters.
The other problem, of course, is that even if I'm dead wrong, and on paper Sanders can win, his victory is predicated on The Youth.
And The Youth will blow off voting for all sorts of reasons, including slightly inclement weather, something good on TV, shiny objects, and nothing at all. The Old vote no matter what, come hell or high water.
Aside:
Also note that Corbyn built a solid foundation of activism over his 33 years in parliament; whilst almost certainly well-intentioned, he did thing after thing after thing that made him look like he was aligned with if not actually sympathetic to our enemies and antagonists. A classic case was him going to Dublin to "negotiate" with Sinn Fein, back when SF were yet to be legitimate in the eyes of the UK government; what the fuck did he think he was doing? He had literally no mandate; he was just some bloke, and he ended up coming off, as always did, as being in bed with the enemies of the UK. At the very best he's always looked thoroughly unpatriotic.
AFAIK, Sanders has never done this. So there's that.
But here != there.
As noted by some American analyst on Radio 4 this morning, the election in November is really all about 80,000 swing voters in 5 states.
Sanders is toxic to sufficient swing voters that he cannot win. Biden is likely toxic to Sanders voters (and herewith half the fuckin' problem; there's nowt the Left (relative or otherwise) enjoys more than shouting "splitters!" at people whose goals largely align with their own), but can attract the floaters.
The other problem, of course, is that even if I'm dead wrong, and on paper Sanders can win, his victory is predicated on The Youth.
And The Youth will blow off voting for all sorts of reasons, including slightly inclement weather, something good on TV, shiny objects, and nothing at all. The Old vote no matter what, come hell or high water.
Aside:
Also note that Corbyn built a solid foundation of activism over his 33 years in parliament; whilst almost certainly well-intentioned, he did thing after thing after thing that made him look like he was aligned with if not actually sympathetic to our enemies and antagonists. A classic case was him going to Dublin to "negotiate" with Sinn Fein, back when SF were yet to be legitimate in the eyes of the UK government; what the fuck did he think he was doing? He had literally no mandate; he was just some bloke, and he ended up coming off, as always did, as being in bed with the enemies of the UK. At the very best he's always looked thoroughly unpatriotic.
AFAIK, Sanders has never done this. So there's that.