Probably not given how 2 races that are likely to be close are on the western half of teh US (AZ and NV) plus those states tend to count slow and also are hard to analyze as well as some other states cause so much vote is from one mega-county which decreases confidence in how the outstanding vote will skew hence taking it longer to call. If Clark County was split into 10 regions, NV likely could've been called a lot sooner.
If D's win a wave insurance seat OH, SD, FL NC IA it will be called because we will win our CA, WA, AZ, NV and WA seat but they will wait til all the WC states are called but you believe in R nut maps and the two special election shows otherwise
SD is in play this time Kristi Noem is under investigation, just like Trump is dragging down the R brand as you say D's have a 1/3 chance of winning it
If we win SD Gov Thune will LOSE, you weren't on the forum when we won ND in 2012