* Dust settles after pound's volatile reaction to Brexit vote
* Market eyeing potential extension of March Brexit deadline
* Graphic: World FX rates in 2018 http://tmsnrt.rs/2egbfVh
By Shinichi Saoshiro
TOKYO, Jan 16 (Reuters) - The pound steadied early on Wednesday following a volatile overnight session after British lawmakers defeated Prime Minister Theresa May's Brexit divorce deal by a crushing margin.
The Parliament on Tuesday voted 432-202 against May's deal, the worst parliamentary defeat for a government in recent British history. had sunk more than 1 percent against the dollar earlier on Tuesday but rallied back after the parliamentary vote, with the sizable defeat for May seen forcing Britain to pursue different options.
However, there are also worries the outcome might trigger political upheaval that could lead to a disorderly exit from the European Union.
The pound traded a shade higher at $1.2864 GBP=D3 after gyrating between a low of $1.2670 and a high of $1.2917 on the previous session.
"While the margin of May's loss was a surprise, the defeat itself was something the market had been pricing in for a long time and it appears that participants covered shorts in the pound after the vote," said Yukio Ishizuki, senior currency strategist at Daiwa Securities.
"The market is now factoring in the March Brexit deadline being extended. In the longer run it may boil down to two scenarios - a no-deal Brexit or no Brexit at all."
The date set in law for Brexit is March 29, but with the clock ticking down quickly an extension of the deadline now appears more likely.
Against the euro EURGBP= , the pound was little changed at 88.65 pence after gaining about 0.4 percent overnight.
The euro was steady at $1.1411 EUR= following a loss of 0.5 percent the previous day.
The dollar was flat at 108.655 yen JPY= after advancing 0.5 percent against its Japanese peer overnight amid a further ebb in risk aversion with U.S. stocks posting strong gains.
The Swiss franc, which tends to gain in times of political tensions and market turmoil along with the yen, also sagged.
The franc lost 0.7 percent against the U.S. currency and last held steady at 0.9878 franc per dollar CHF= .
The Australian dollar was slightly lower at $0.7199 AUD=D3 after dipping 0.2 percent on Tuesday. (Editing by Shri Navaratnam)