Update, executive summary:
With 21 of the 40 states having 85% or more of the precincts in (all have 50% or more and 12 have 99%), Rail has increased his lead with a total deviation of actual from estimated % of 134.4% (average 3.36% per state) to Pete's 238.5% (average 5.96% per state). Best state so far for Rail is Texas at 0.04% off, for Pete with Arizona at 0.22% off (but Az is changing fast).
So far Rail has the better estimate in 30 states, Pete in 10. Rail closer in 5 of the 7 "conflict states", all but AZ and MN.