So Clark County website says 27k vote IPEV yesterday. Way down from 39k in 2016... but mail ballots screw up comparisons.
No breakdown by party.
https://elections.clarkcountynv.gov/electionresults/evturnout.aspx
Look at what I found (with credit to Speedy for the inspiration):
https://www.nvsos.gov/sos/home/showdocument?id=8686
This is combined in-person and mail-in voting. Thus far, we are seeing a makeup of 43% Dem and 40% Rep.
How does this compare to 2016?
Well... You have to scroll down to a very ugly website here to get the historical data. http://www.electproject.org/early_2016
But bottom line, in 2016, Nevada early voting was 42.1% D, 36.2% R, 21.7% I.
Want even more promising numbers? Heres the results of Nevadas first week of early voting *from 2016*: https://www.nvsos.gov/sos/home/showdocument?id=4543 - if you combine the mail-in and IPEV, 43.7% D - 36.7% R, so we can expect the gap to narrow further if this follows historical trends.
Id caution to wait for a few days of Clark County IPEV numbers before getting excited about these numbers. But it does look promising!