A Federal Communications Commission member who sought further concessions in a pending satellite radio buyout has withdrawn his offer after it failed to draw support.

Because of this, Democratic commissioner Jonathan Adesltein voted against Sirius Satellite Radio Inc.’s proposed takeover of XM Satellite Radio Holdings Inc. This also means the vote on the regulatory body now stands at 2-2, with Republican member Deborah Taylor Tate still undecided.

FCC Chairman Kevin Martin and fellow Republican Robert McDowell have both voted in favor of the deal. Democrat Michael Copps voted against it Monday.

Adelstein’s vote puts even more pressure on Tate, who is seeking resolution of a pending enforcement action against the companies, according to public filings.