As a hard-fought campaign came down to the wire Obama was declared winner after picking up crucial swing states, ending the uncertainty that had pervaded markets for the past few days.
But in afternoon foreign exchange trade the greenback slipped against the euro and yen as dealers bet that under Obama the Federal Reserve would continue with the loose monetary policy that has seen it flood markets with billions of dollars.
The European single currency bought $1.2860 in Tokyo, well up from $1.2788 earlier Wednesday and $1.2814 in New York late Tuesday. The greenback was at 80.09 yen compared with 80.34 yen in New York.
The US dollar was also broadly lower against other Asia-Pacific currencies, falling to $1.0447 against the Australian dollar from $1.0432, to to 1,086.15 South Korean won from 1,091.20 won and to Sg$1.2211 from Sg$1.2240.
Gold prices rose thanks to the weaker dollar, climbing to $1,725.30 by 0635 GMT compared with $1,679.75 late Monday.
A clear victory had been the overriding hope as it will now allow the government to move on fixing the austere “fiscal cliff”, which will dominate discussions in Congress between now and Christmas.
If Congress fails to agree how to cut spending over the medium term, the current deal would force deep, immediate spending cuts that could tip the United States back into recession in a major blow for the slowing global economy.
On equity markets Sydney gained 0.71 percent, or 31.7 points, to end at 4,516.5. Tokyo was flat, nudging down 2.26 points to 8,972.89, while Seoul closed up 0.49 percent, or 9.38 points, at 1,937.55.
In the afternoon Hong Kong was up 0.13 percent and Shanghai was 0.21 percent lower.
“The issue now is the uncertainty surrounding the US fiscal cliff, and how a divided Congress will deal with the issue,” he added.
SHK Financial strategist Daniel So told Dow Jones Newswires: “An Obama victory ensures the continuity of the US monetary policy, which is likely to be kept loose.”
He added that a Romney win would likely see him “launch policies to incentivise fund flow back to the US, so in terms of liquidity inflow an Obama win also favours the Asian markets”.
Wall Street ended with impressive gains ahead of the election results. The Dow rose 1.02 percent, the S&P 500 climbed 0.79 percent and the Nasdaq added 0.41 percent.
However, regional traders were still concerned about Europe’s debt woes, which were stoked on Tuesday after data showed a bigger-than-expected slump in factory orders in Germany, the eurozone’s biggest economy.
Berlin said industrial orders declined 3.3 percent in September from August after falling 0.8 percent the previous month.
That is much steeper than expected. Analysts polled by Dow Jones had been pencilling in a fall of 0.5 percent.
The drop was largely due to a decline in export orders, particularly from the eurozone where they plummeted 9.6 percent.
And Greek lawmakers are due to vote later in the day on a new set of austerity measures — including tax hikes and pension cuts — that are needed to unlock the latest batch of international aid and stave off bankruptcy.
Eyes are also on the upcoming 18th congress of the Chinese Communist Party that begins on Thursday and which will see the country’s leaders for the next 10 years anointed.
Oil prices were lower. New York’s main contract, light sweet crude for delivery in December, fell 27 cents to $88.44 a barrel in the afternoon and Brent North Sea crude for December shed 56 cents to $110.51.
In other markets:
— Taipei closed 0.70 percent higher, adding 50.50 points to 7,287.18.
Leading smartphone maker HTC gained 3.99 percent to Tw$ 208.5 while Taiwan Semiconductor Manufacturing Co was 0.66 percent higher at Tw$91.0.
— Wellington rose 0.50 percent, or 15.42 points, to 3,943.10.
Fletcher Building was up 1.68 percent at NZ$7.25 and Cavalier Corp. was steady on NZ$1.87.