It's the Rangers. Hmmm....one question, and one note.
The question is: how many Washington Senators fans are there around who still root for the Rangers? Can't be very many at all. First of all, it's been almost forty years. Second of all, the second Senators only lasted for eleven years; you don't get a whole lot of permanent attachments over eleven years, you wouldn't think. Especially eleven years that were hardly distinguished. And on top of that, you have the original Senators...all in all, I'm sure there aren't many. But there must be a few, no?
Second, the note: this makes six different teams in the World Series in six years for the American League. That breaks a tie with 2002-2006, but it's still shorter than the run from 1981 through 1988, eight different pennant winners in eight years. And that's it, in the long history of the AL, unless I've missed something. I counted a few five year, five team runs (including one that overlaps the big '80s run), but this seems to be the second longest streak of that kind ever. The National League has hit six more times, but it's worth noting the streak beginning in 1914: Braves, Phillies, Dodgers, Giants, Cubs, Reds: six of the eight teams, or all but the Pirates and Cardinals.