A report from the IEEE 802.11n task group says that TGn Sync won 56 percent of the vote: However, in the IEEE voting rules, that only provides provisional support. TGn Sync must now solicit more than 75 percent of the vote for their draft to become the proposal that's refined and eventually ratified. If they can't achieve a 75-percent supermajority for a revision of their proposal in May--or possibly even subsequent meetings--the vote rolls back to trying to get 50 percent support for a single proposal to move forward on.
In the 802.15.3a group on ultrawideband, for instance, no proposal reached the supermajority, and the process has been stalled while individual alliances and companies have separately moved forward on developing against their own group or company standards.
Update: Wi-Fi Planet has a great summary of this with a bit more procedural detail.