The Economist has her ahead by 2% as of 11 September: https://www.economist.com/interactive/us-2024-election/trump-harris-polls

The Economist following Trump's election in 2016 revamped its polling to try and be more accurate given the across the board failing of pollsters in that election. (I don't remember how they did that.)

I don't know how that percentage lead breaks down for the battleground states.

Pimping my site, again.

http://www.worldcomicbookreview.com