The 'winner' of season 2 is "PRECIOUS CARGO". (I don't think anyone is really surprised by that.)
Thank you all for voting. Season 3 will start soon.
Side note, and this is just my opinion... I have to say, despite how much I do love each STAR TREK series for different reasons, season 2 of ENTERPRISE is at the bottom of the franchise. I used to feel season 3 of STAR TREK was the worst, but after rewatching every episode of the franchise recently, my feeling has changed. And I figured out the problem. Season 3 of TOS had some terrible episodes, but they did make some very memorable ones. And even some of the bad ones have some unique concepts behind them. They tried... you never really knew what you would get. It wasn't boring.
Season 2 of ENTERPRISE did the worst thing it could possibly have done... be boring. So much of the season was just boring, it really felt like a mission to go through some episodes. I still love the show, and there were a few gems this season, but this season really did not deliver, overall. They definitely made up for it in seasons 3 and 4, and I am very happy they got the chance. I think the only thing worse than STAR TREK leaving the tv scene with the ENTERPRISE finale was if this was the final season.