I have this feeling that the Utah County "precincts" are really absentee ballots. They came in too fast. So this is all absentee count, and thus cannot be used as a projection, at least by me, because I don't know the behavior of absentee ballots voters versus same day voters, and beyond that, what we have here is a quite homogeneous electorate divided on one issue, so past performance is largely irrelevant.
One would expect absentee ballots to favor Chris Cannon, as they tend to be cast by voters some time earlier. It was only in the last few weeks that John Jacob's campaign really got on the radar.
Here in our area of Arizona, the absentee people are not always in sync with the total votes because so much is fluid right up til election day.