Well I don’t trust Ras period. It seems as though they did this before the last debate. He was up above 50, like 53, and then the next poll it was 44. But needless to say, October 1st seems like it was a million years ago and only Trump could whether that storm.
Gallup's polling accuracy, good or bad, doesn't seem to factor into the overall picture of their reelection data since 1948 that shows the importance of a POTUS job approval rating of 50% or greater for reelection. Presidential job approval ratings are the only polling data that I usually pay any attention to.