We've added bellwether and tipping point frequencies to the 2020 presidential election simulator.  This information has also been added to the simulator daily trends page, where we show the results by state for the most recent day's run of 25,000 simulations (scroll toward bottom of the page).

Bellwether:  Percentage of simulations where the nominee winning a state also wins the election.

Tipping Point: This is the state that gives the election winner 270 electoral votes, when ordering the states won from largest to smallest margin of victory.

The top 5 states in each category for July 31 are below.