I'm not voting for Buggy because of the goddamn messianic meme. He was awesome BEFORE he was the jailbreak messiah.
The whole Buggy's-rise-to-celebrity subplot in ID/the war only confirmed what Buggy fans already suspected – that Oda could and was willing to give him a bit more depth while still allowing him to be comic relief. Buggy's finally about to face up to what it means to be an inheritor of Roger's legacy, even if he was merely a cabin boy two decades ago.
It started out as a great big joke, to be sure, but with Ace and Whitebeard dead, his name all over the media, and that tantalizingly mysterious letter from the government, there's no way Buggy's not going to make SOME significant move in the New World. If anything, Buggy's status as the joke of the pirate world is only getting funnier. He's got a lot of parallels with Usopp; he does a lot of stupid shit in the interim, but in the clutch he actually buckles down and shows some spine and ingenuity. You really get the sense that he's a lot smarter than he lets on; he just lets his ego roam a bit too freely.
Rayleigh's cool and all, but there's no way I'm voting for him just to spite Buggy's memedom. Buggy is easily my favorite character in OP who isn't a Straw Hat. Forget the messiah memes and vote your conscience for one of the greatest characters in One Piece.