So I figured I'd take a stab at guessing what Trump's approval was in each of those battleground states in the poll and then see what all the states combined would average by weighting them along their share of the 2016 electorate. Without revising anything after projecting each state, my combined "gut number" came out right on (46% approval in the battlegrounds). Mainly just for fun, but maybe it can at least give us some parameters. "TMP" is the Trump approval figure:
ST 16VOTE PCTVOTE TMP
AZ 2.6m 5.7% 50 2.85
CO 2.8m 6.1% 44 2.68
FL 9.5m 20.7% 46 9.52
GA 4.1m 9.0% 48 4.32
MI 4.8m 10.5% 43 4.51
MN 2.9m 6.3% 42 2.65
NV 1.1m 2.4% 44 1.06
NM 0.8m 1.7% 42 0.71
OH 5.5m 12.0% 50 6
PA 6.2m 13.5% 42 5.67
TN 2.5m 5.5% 56 3.08
WI 3.0m 6.6% 43 2.84
T 45.8m 100% 45.9