Incredibly, the BBC of all possible sources alerts us to the fact that the manufacturers of Monopoly (the game) are preparing an international version, and that web surfers can influence which cities will be represented. I can only assume that the BBC folks are aghast at the fact that one "Jerusalem, Israel" is currently rather high in the running, and they hope their readers will all vote for, I dunno, Gaza perhaps, or Leeds, but on their way to that goal they've told us how to strengthen Jerusalem's standing. There is detailed assistance here. (It's a rather elaborate procedure, and you need not to miss any of its stages). And note: you can vote once a day till the end of February.
Go for it. And don't vote for any other towns, lest you dilute Jerusalem's score.