1. PQI an EAS service, so dependent on continued federal funding, not so much on profitability of the route.
2. Even putting EAS aside, "loads" are irrelevant. PRASM is all that matters. As you can imagine, if all you want to do is to sell seats, you just cut the price. So, PRASM is what matters and there is no way that UA discloses that.
Nothing you can do about what may or may not happen in November, so don't spend any time on it. If PQI loses its air service, you can fly to BGR and drive (3 hours is nothing in Northern Maine).