Jane2 said: "But still guys, can we really depend on polls? Don't things change right up to the very end?"
Yes and yes. Polls will change, but any individual poll needs to be put into context to determine its validity. Polling firms use different methodologies, which tend to give them a lean (a lean is not a bias). The methodology used by the folks at 538 truly sets them apart from the talking heads on cable news, who tend to set their hair on fire with every new poll. They look at each pollster's track record and lean, giving greater weight to some and ignoring others. So right now, we're looking at a snapshot, which will change between now and November. As November approaches, the analysis done at 538 will become more stable and reliable. It's wonky stuff, but I find it compelling. Guess I'm a wonk.
"It does me no injury for my neighbour to say there are 20 gods or no god. It neither picks my pocket, nor breaks my leg."
-- Thomas Jefferson