(Bloomberg) — The yen extended losses to 1% while Japanese stocks climbed Monday as investors mulled the implications of the Liberal Democratic Party and its coalition partner losing their majority.

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The slide in the currency as far as 153.88 against the dollar came after four straight weekly declines. That’s again raised the risk that authorities may wade back into the market to protect the yen as traders factor in when the Bank of Japan is likely to raise interest rates again given the political uncertainty.

“This result is definitely a concern for many investors, because we have no clear picture about who’s going to be leading the country,” said Hebe Chen, a market analyst at IG Markets Ltd. “The LDP is in a very difficult position and there’s no one option that can be easily settled.”

The yen has depreciated 7% against the dollar this month, and is the worst performer among its Group-of-10 peers.

The tech-heavy Nikkei 225 Stock Average and the broader Topix index both opened slightly lower before quickly turning to gains of more than 1%.

While political instability is typically negative for equities, there is still a possibility that Prime Minister Shigeru Ishiba can secure enough support to stay on. Currency declines also tend to support the stock market.

“This is an unexpected reaction,” said Shuji Hosoi, senior strategist at Daiwa Securities Co. “While the political risk may be increasing, there may be expectation that the Ishiba administration won’t become a lame duck immediately.”

Support for the LDP and its partner Komeito fell short of the 233 seats needed for a majority in the lower house, according to a tally by public broadcaster NHK. Surveys by other media pointed to similar results.

In the fixed-income market, the yield on benchmark 10-year government bonds rose 1.5 basis points to 0.96%. The LDP may team up with a party that has pledged to cut consumption and income taxes and is likely to pursue expansionary fiscal policies, said Katsutoshi Inadome, senior strategist at Sumitomo Mitsui Trust Asset Management Co.

Much of the currency’s weakness reflects the ultra-low level of interest rates in Japan relative to the US and other major economies. This wide gulf is unlikely to change significantly anytime soon, with the BOJ widely expected to keep its policy interest rate unchanged at a meeting that concludes Thursday.

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