- Tuesday's Brexit vote will not likely get enough support, former U.K. Prime Minister Gordon Brown told CNBC on Monday.
- If the ruling Conservative government loses the vote, a no-confidence vote is likely, he continued.
- "There is a long way to go and sadly, this is a prolonged period of uncertainty both for investors and the economy but also for the political system," Brown said.
The U.K.'s former Prime Minister Gordon Brown told CNBC that he doesn't expect a closely-watched Brexit vote on Tuesday to go in the government's favor.
"I don't think she's going to win it," Brown told CNBC on Monday, a day before British lawmakers were due to vote on Prime Minister Theresa May's deal to leave the European Union.
May's "Withdrawal Agreement" faces deep opposition within the parliament and if her blueprint gets shot down, the consequences could be dire. Several potential scenarios could unfold: May's government could collapse; the U.K. could face a disorderly exit; a second referendum could happen; or the entire Brexit process may get scrapped altogether.
According to Brown, May could even try for another vote in the near future.
"If she loses the vote, then undoubtedly the opposition party will put down a vote of no-confidence in the government," the British politician told CNBC's Martin Soong at the UBS Wealth Insights conference in Singapore.
But a no-confidence vote doesn't necessarily mean a general election, so May "is likely to come back and try to put her proposal, perhaps in an amended form, a few days later," he predicted. That could potentially lead to "a whole series of indicative votes" on different options for the country's future, he said.
"There is a long way to go and sadly, this is a prolonged period of uncertainty both for investors and the economy but also for the political system."
Failure to back Tuesday's deal "would be a catastrophic and unforgivable breach of trust in our democracy," May wrote in a Sunday Express editorial over the weekend. The vote was originally meant to take place in December but it was delayed on concerns of insufficient approval from the U.K. Parliament and May's Conservative Party, with disapproval from both Brexiteers and Remainers.
Brown — who was prime minister of the U.K. from 2007 to 2010, and served as chancellor under Tony Blair's government — believes a second referendum should happen. The country needed a period of nation-wide consultation after the first Brexit vote in 2016, not just a narrow parliamentary debate, he argued.
"We've got to stand back, look at what's not been achievable under the parliamentary process we've got, and think again about how we can actually resolve this issue in the future."
"I have not seen Britain more fractured than it is now," continued Brown, who is an advisor to Pimco, one of the world's largest money managers. He was recently hired by Swiss private equity firm Partners Group as an advisor.
The political crisis in Britain is a reflection of global political trends, Brown said.
"We're now seeing around the world the full impact of populism, of protectionism, of the rise of nationalism," he said, referring to the developments such as the U.S. government shutdown, the U.S.-China trade spat and protests in France.
Based on the instability that now exists from the rise of populism, protectionism and nationalism, political risk is "one of the major fears people have about the economy in 2019," Brown cautioned.