Better than any surveys and polls, watch the bets that are made with money, they will definitely not deceive and are the most accurate. For example, prediction markets such as polymarket or kalshi. I often go there to monitor probabilities. You have probably seen how other users on our forum often mention this. Nevertheless, there was an attempt to ban them at the legislative level in the US this spring. I would not like this. I want to say that Trump is currently leading with a probability of 53% and volumes of more than $ 1.5 billion. Nevertheless, there is still time before the election to tip the scales in one direction or another. It is no secret that candidates have professionals who are trying to convince voters to vote for their candidate. I think the whole world is watching this.
While I do agree that polls are never good, and they are just calling people up, which could be a wrong way for learning about the situation, I also doubt betting is true neither. One reason, because this is a p2p one, meaning if I am a moron that has 50 million to throw, I can make any of them look like they are winning, makes no sense to go with that.
Odd providers are fine though, because in that case it is not p2p, it is you against some sports bookie basically, and they will not want to lose, and they will arrange it better. So no pools, no p2p markets, look at places like stake and similar other websites, they will show you which one is leading, because they are betting their balance to it, and they need the favourite to win, so they will not pay up something high. These days they are very close or even tied at some days and this definitely shows how great we are going with this, we shouldn't really be bothered by it and look for something further in the end as well.