Because prices on firearms and related items go up and supply dwindles just before and for a while after elections.Why is the election date important? If the election was called off, all you guys stocking up on various things would sure look silly.
My life does not revolve around elections. Especially national elections.
Did you do no shopping the last two times Obama was elected? It upsets the firearms market greatly. It's best to buy now while prices are stable and availability is ample rather than later when it all gets tossed up.