Betting/polls aside - the race for President in the US appears to be tied. In particular, this race remains impossible to call because it (almost certainly) comes down to a how a handful of voters in a small number of swing states will vote - the rest of America has made up its mind and it's now down to these few swing state voters. Who knows how these individuals will vote?
Another problem is that the vote is so close that a last-minute news item, however slight, might make all the difference.
I hope (of course) that Harris wins. And I think she probably holds a slight advantage, even now. But who knows? It could easily go either way.