So, does his apparent dementia explain his treasonous defection to the dark side? No sane person would have willingly given power to the likes of Hillary Clinton, Ted Kennedy, and Tom Daschle (to name a few)...
A sad demise for a Senator or anyone but: it does not over-rule his horrid voting record, his betrayal of the GOP, and his views that pacifism and socialism are somehow what America needed and that his own geographic area should adopt. Perhaps he and Sanders led those voters down the path to the Dark Side and should not be missed.