Okay the vote is closed. I couldn't have predicted the results. Took me by surprise.
The outright winner is obviously the Earth Alliance. I would have expected everyone to be bored of playing as the EA by now but apparently not. I guess there are some interesting possibilities though. Recreating the Earth Minbari War or for example. Taking second place we have the Minbari. Ok right out of left field that one. No idea what people are thinking there

.
Joint third we have the two most fun races in BHX, the Shadows and the Interstellar Alliance. Honestly start a war against anyone using those two races and you'll have a great time.
Fourth place we have the Narn. Obviously a few people wanting to use BHX as a Narn Centauri War campaign there. I'm guessing. The Narn have some great ships though and the Bintak dreadnaught is fearsome.
The poor showing for the Centauri doesn't surprise me much. I can't think of many fun possibilities for them when it comes to picking an opponent. I am surprised though by the lack of interest in the Vorlons, Drakh, and League of non-aligned worlds. The lack of interest in the Vorlons I'll put down to the continued absence of the Vorlon Dreadnaught. To be honest, without it you'll get your butt kicked anyway. The Drakh and League are both great fun to play though. The League's capital ships are very pretty to look at (for a few seconds before they get blown up) but the Sky Serpent fighter is absolutely lethal in numbers. They will do better in battle than most people will be thinking.
The Raiders? Okay well we only have one sado masochist in the 35 voters. I don't care how good a pilot you are mate, you're going to lose

. I hope you're good at evasive maneuvers in a Zephyr.