the GNU version of the Collaborative International Dictionary of English
v. To exceed in the number of votes given; to defeat by votes.
The Century Dictionary and Cyclopedia
To exceed in the number of votes given; defeat by greater number of votes; outnumber.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
v. defeat by a majority of votes
Word Usage
"At any time when the Democrats had anywhere from 34 up through 67 Senators present and voting their way, the nominees could be confirmed, e.g., at 4 am tomorrow morning when 40 Democrats are around to outvote 18 Republicans."