(Bloomberg) -- The pound may more than hold its poise if Theresa May’s Brexit deal is rejected by fewer than 70 to 75 lawmakers, analysts say.

A relatively small shortfall for the U.K. prime minister, who needs 320 votes to push the pact through Parliament, may kindle hopes that she could succeed in a second attempt and spur gains in the currency. On the other hand, a large margin of loss -- 100 or more -- would ignite risks from a no-deal Brexit to an early election or even a second referendum, driving sterling lower, according to strategists and fund managers.

Below is a compilation of views from analysts and fund managers on the different post-vote scenarios and potential pound reaction:


  • Rejection by 25 to 75 votes appears to be the currency’s market’s base case, strategists including Moyeen Islam wrote in a note
    • Large spot reaction unlikely in this scenario, but risks are skewed toward depreciation and front-end volatility (2-4 months) is likely to stay elevated
  • Rejection by less than 25 votes would lead to 0.5%-0.75% sterling appreciation on the day on expectation of an orderly Brexit
  • If May loses by more than 75 votes, it would increase the risk of no-deal Brexit and lead to sell-off in pound

Canadian Imperial Bank of Commerce

  • A defeat by “less than 70 and May lives on to attempt to fight another day,” said head of Group-of-10 strategy Jeremy Stretch
  • If she loses by 100 to 130 votes, pound would fall below $1.26, but if she loses by more than 150 votes, “we are clearly at risk of a leadership challenge and that could encourage a $1.24 test”


  • Chief macro strategist Rupert Harrison says May still has a chance at getting her deal approved if the margin of loss is 30 to 40 votes
  • There is possibility of “small tweaks, particularly to the future relationship document, maybe to parts of the withdrawal agreement,” despite EU leaders saying there isn’t
  • Defeat by a large margin would spur country to consider alternatives including arrangements on the lines of European Economic Area or FTA

Mizuho Bank

  • “Personally, I see a little wiggle room but not much -- it’s quite binary for me,” said Neil Jones, head of hedge fund currency sales
  • Says market will “probably buy pound on 300 votes, sell on 270”
    • “270 or less and 300 votes or more are the market alarm point to sell or buy sterling”
  • Sees pound rallying to $1.35 if May gets the majority 320 votes; at 300 it will probably rally to $1.30
    • Sees sterling falling to $1.2250 if vote count is 270 or less for the deal

UBS Wealth Management

  • “The key thing to watch will be the margin,” said chief economist Dean Turner
  • “If its something more manageable in terms of numbers, not the 200 number people are talking about that’s arguably a very different situation to a huge defeat”
    • “If its a huge defeat things become a bit more messy, we start talking about confidence motions etc.”
  • “A defeat of 50, perhaps,” is manageable; “is a defeat of 100 manageable? Maybe.”

--With assistance from Charlotte Ryan.

To contact the reporter on this story: Shoko Oda in London at soda13@bloomberg.net

To contact the editors responsible for this story: Ven Ram at vram1@bloomberg.net, Anil Varma

©2018 Bloomberg L.P.