Investors see Prime Minister Taro Aso's administration as the biggest negative for Japan's stock market this year, a Nomura Securities Co. survey showed.
Some 53 percent of 1,000 investors said Aso's government would have an adverse effect on the shares of Japanese companies in 2009, according to the survey published Tuesday in Tokyo.
Aso's popularity has plunged to about 20 percent from 50 percent when he became leader less than four months ago, on concern that he's not doing enough to combat the recession. The Diet has yet to approve two stimulus packages as political bickering intensifies ahead of an election that must be held by September.