Prices go up regardless. If Trump wins, a lot of people will feel buying that 'bannable' rifle is less risky, plus they'll want to celebrate, or simply buy gifts for the holidays like always. If Hillary wins, more people will panic & drive prices higher, but demand will so outstrip supply that many smaller stores/dealers will have to shut down (my local guy already reports he's having trouble finding any rifles under the $1000 mark, so his store is filled with slow-moving cool guns like Tavors, MPX, Kriss, etc)
Stupid thing is, there's very little reason to buy now when prices are highest in either case. Trump wins, the threat of laws will seemingly abate, and demand should normalize (assuming we aren't at the 'new normal' already) and drop prices a bit more, though they were already about as low as possible for people to stay in business. If Hillary wins, we're talking *YEARS* before sweeping new gun controls in a worst case scenario, with plenty of warning up to that point (election, inauguration, largely ineffecitive executive orders, SCOTUS appointment, SCOTUS nomination, over-reaching enforcement policy or district-level case brought to SCOTUS, SCOTUS grants cert, SCOTUS hears arguments, SCOTUS issues opinion, several more similar policy cases must then be upheld under the new standard via stare decisis before the opinion can become meaningful in the long run, or wither a way in a few years like Heller.)
TCB