It cut its odds on a no-deal departure to 10 per cent from 15 per cent and kept unchanged its 25 per cent probability of no Brexit.
The pound held at five-month highs of $1.2874 against the dollar, down from Thursday’s peak of $1.2988.
Johnson won the top job by staking his career on getting Brexit done by the latest deadline of Oct. 31 after his predecessor, Theresa May, was forced to delay the departure date. Parliament rejected her deal three times, by margins of between 58 and 230 votes.
Downing Street is casting the Saturday vote as a last chance to get Brexit done with lawmakers facing the option of either approving the deal or propelling the United Kingdom to a disorderly no-deal exit that could divide the West, hurt global growth and trigger violence in Northern Ireland.