The phrase "a devastating vote" is correct and usable in written English.
It can be used to describe a vote that has significant negative consequences or impacts.
Example: "The council's decision to cut funding for the community center was a devastating vote for the residents who relied on its services."
Alternatives: "a crushing vote" or "a catastrophic vote".
In their partnership, he has not been a very worthy partner, and she plans to let him know as much in the place that hurts the most — on the House floor, with the whip count, with a devastating vote.
He could not say what needed to be said: that this was a devastating vote to which the whole of Europe had to respond if it was to hold together.
After the elections of September 1932, von Papen responded to a devastating vote of no-confidence (512 to 42) by again dissolving the Reichstag with a decree that was signed by President von Hindenburg.
They've tried everything quitting the front bench en masse, holding a devastating vote of no confidence, shyly suggesting alternatives but he still won't resign, and unless he resigns they'll have to face the fact that 50 to 60percentt of the membership still backs him, and he's almost certain to win any new leadership vote.
Ending a day of high political drama in Brazil, the supreme court bought President Dilma Rousseff a little time on Tuesday night to reverse a potentially devastating vote on the impeachment committee that will decide her fate.
Moments after the devastating vote, a reporter asked House Minority Leader Nancy Pelosi if the Democrats would finally support single-payer, to which she answered, "no," without skipping a beat.
"Today's vote is a devastating blow for the Church of England and the people of this country," the statement read.
Whatever the international implications for Britain, the vote was seen as a devastating blow to Cameron's authority at home.
That a medium-sized tremor in voting behaviour should lead to a devastating earthquake in the House of Commons is for them a good thing.
At end of 2010, the Dream Act failed to pass by a five votes in the Senate, which was a devastating loss.
The Supreme Court's 5-to-4 vote in AT&T Mobility v. Concepcion is a devastating blow to consumer rights.
