My advice is to stop looking at tweets or comments about long lines here, record turnout there, empty lines in this city, etc. and just look at actual data. Florida, Arizona, and Nevada are the states that provide the best data and by party.
Florida - Republicans are approaching a 1.2 million ballot advantage and the Republican turnout overall, including early and election day voting, is 7% higher than the Democrat turnout
Arizona - Republicans currently have a 250,000 ballot cast lead over Democrats and growing. The overall turnout advantage is growing as well with Republicans turnout at 3.57% higher rate than Democrats.
Nevada - Republicans have around a 45,000 vote advantage and an 8.82% turnout advantage. Democrats are cutting into Republican advantage a bit by outperforming in Clark County, but Washoe and rural counties have not done an afternoon vote drop yet, which will likely wipeout the gains from Clark County over the past couple of hours.