This poll indicates that Biden appears to be picking up the lionshare of Evan McMullin voters, which isn't surprising (though Trump is clearly gaining a number of these voters as well, and probably some of the Gary Johnson voters also). Nevertheless, my earlier prediction of a 55-40-5% result in Utah seems like it could be bearing fruit, and as has been said, would constitute the worst majority Republican performance here in decades (not counting the plurality wins of H.W. Bush in 1992 and Trump himself in 2016).
I think the last poll of Utah that I recall had McMullin voters splitting roughly 40% Biden- 40% Trump- 20% undecided (Or something similar).
I didn't see a specific breakdown in this poll, but yes by logical inference the topline numbers would appear to suggest that the former "undecided" McMullin 2020 voters are breaking heavily against Trump.
DEM Swings in Davis County, and to some extent Utah County should be interesting to watch, not to mention Salt Lake County becoming a 50%+1 Democratic County in 2020 (and most likely significantly higher than 50% exceeding the Obama narrow plurality win over McCain in '08).
