Cannabis stocks have generally done well during the fourth quarters of election years.Federal marijuana legalization isn't likely to happen anytime soon, regardless of who wins this year's presidential election. But it doesn't need to happen right away. Often, all it takes to move the needle for cannabis stocks -- and sometimes to turn them into scorching-hot gainers -- is for the market to start believing that eventual legalization may be inevitable.Two stocks that often surge when there's talk of marijuan ...