Poll: What MLS Cup match-up do you want to see?

Only one more game left in each conference to decide which two teams will face off in the 2015 MLS Cup.

Will it be the Supporters' Shield-winning New York Red Bulls, seeking to complete a double for the season? What about the current leader in the Eastern Conference Championship, Columbus Crew SC, the only team left to have hoisted MLS Cup before?

Or how about the newest MLS team still left in the competition, the Portland Timbers, who have a lead in their Western Conference Championship? But FC Dallas -- who narrowly missed out on the Supporters' Shield themselves -- have a stellar home record, so will they make it back to the big game?

Who will advance to MLS Cup 2015?

Crew SC vs. Timbers - first-leg winners hang on for victoryRed Bulls vs. FC Dallas - Top seeds spring comebacks on home turfRed Bulls vs. Timbers - Shield winners rebound, PTFC hang onFC Dallas vs. Crew SC - MLS Cup returns to DFW