Investors and traders in Asia indicated today they are mostly increasing their bets on Democratic nominee Hillary Clinton winning the US presidential race, after the second of three debates with Republican party nominee Donald Trump.

Some, though remain cautious, saying there was still a chance of a surprise Trump win. They said many in the markets were wary after being burned by the shock 'Brexit' vote in June.

MSCI's broadest index of Asia-Pacific shares outside Japan edged up around 0.1 percent by mid-afternoon in Singapore on Monday, while Wall Street index futures were little changed, after Clinton exchanged barbs with Republican party nominee Donald Trump in the televised event, which was shown live across trading rooms during Asia's morning.

Acrimonious discussion

The 90-minute debate quickly turned into an acrimonious discussion of a 2005 video that emerged on Friday in which Trump was heard using vulgar language and talking about groping women.

The controversy has caused some senior Republicans to withdraw their support for him.

"For those that think that Trump has a very, very low chance of winning the US elections, it might be a good time to go long on global equities," said Itay Tuchman, Citi's head of markets for Australia and New Zealand.

Markets could be prematurely pricing in a Clinton victory, as they did during the 'Brexit' vote in June, when the United Kingdom voted unexpectedly to leave the European Union, said Lee Jin Yang, research analyst for Aberdeen Asset Management in Singapore.

"We need to remember that Brexit only became a key focus one week before the vote. The market had priced in near zero probability of it happening, but it did."

According to a CNN online poll, Clinton won the debate by 57 percent to 34 percent.

But Josh Crabb, head of Asian equities at Old Mutual Global Investors in Hong Kong, said he is wary of such polls - especially after Brexit.

"The way that mainstream media, and a lot of commentators, interpret the outcome of the debate may be different to what the voting public in general takes away," Crabb said.

"That is a concern because often, a lot of these polls have not been quite as accurate as people are expecting."

Mathan Somasundarum, a strategist at stock brokerage Baillieu Holst in Sydney, said a Clinton victory would reduce the risk of the United States adopting a strong trade protectionist policy.

Trump has been highly critical of the NAFTA trade deal with Mexico and Canada as well as the Trans-Pacific Partnership, which has yet to be ratified by the US Congress. He has promised to build a border wall and make Mexico pay for it.

"I would expect the US dollar to weaken and you would expect then there is some pressure coming off emerging markets, and then commodities, which (are a) proxy for emerging markets," Somasundarum said. "China, commodities and the Aussie dollar should do better."

While the markets had already begun to price in a Clinton victory even before the Republican party's crisis over Trump's 2005 remarks, some are beginning to game out what would happen if the Democrats won both houses of Congress, which are now Republican controlled.

The possibility of the Democrats controlling Congress and the White House is a concern to some in the markets, as they see it leading to more regulation of businesses and higher taxes.

"Over time, people will start thinking, is this going to mean a big difference in the way taxation works? Is it going to mean more government involvement?," said Crabb at Old Mutual Global in Hong Kong. "But the immediate reaction will be a relief rally."

Angus Gluskie, managing director of White Funds Management in Sydney, said while markets usually view one party dominating the government as a risk, it could be different this time.

"Investors have been disappointed by the political stalemate over recent years, which has prevented meaningful and well-needed changes being pursued," Gluskie said.

'Debate not a game-changer'

Steven Friedman, senior investment strategist at BNP Parisbas Investment Partners in New York, said he saw little in the debate that represented a game-changer for either candidate.

"This obviously plays to Clinton's advantage, given her lead in the polls," he said.

Strategists in a recent Reuters equity poll mostly viewed an election victory on Nov 8 by Clinton as more positive for the stock market through the end of the year, largely because her positions - unlike her opponent's - are well-known.

Chris Brankin, chief executive at stock brokerage TD Ameritrade Asia, said he thought Trump was much better prepared for the town hall debate in St. Louis than he was for the first debate, and that could give the markets some pause.

"I have always said markets 'know what they get' with Hillary, as she has always been seen as pro-Wall Street, and Trump is a bit of an unknown for investors.

"After tonight's debate, I still think there are a lot of questions as who will be elected into office next month and markets are probably going to remain till after the US elections."

- Reuters