I've been to Disneyworld several times in late October and early November, and I've NEVER experienced ANYTHING but beautiful weather, and VERY manageable crowds. There MAY be a bit of an attendance bump around election day (with people squeezing every bit of bang out of their off day from work) but you COULD just plan on using that specific day as a sort of "enjoy the pool at the hotel" kind of respite.
I HAVE heard tales of cold Novembers, but never have I experienced one. Instead, you SHOULD find 80 degrees and sunshine galore.
The ONLY negative I've experienced at this time of year, is that on a couple of November occasions, I've gone to one of the WDW water parks, only to find that it's MOBBED! Often one or the other of Typhoon Lagoon or Blizzard Beach will be closed for refurbishing during the month, and I think that keeps the other crammed on hot days.
All things considered though - you should have a wonderful time, with minimal ride-waits and an actual bit of elbow room as you wander, smiling down Main Street USA.