The 25th edition of the Boston Music Awards isn’t until Dec. 2, but voting is open on the website until Monday, so there’s ample time left to voice your opinion on the best bands to come out of the region in the past year. As usual, there’s an abundance of talent across a wide spectrum of genres — we really do live in one of the best musical cities in the world. So much so that even the savviest local scenester would have trouble keeping up with all of the music put out this year. With that in mind we’ve put together a cheat sheet of our picks among a few of the major categories for who’s likely to win, and who could likely cause an upset.