Economy in doldrums

Abe has called for "unlimited" monetary easing and big spending on public works - for decades a centerpiece of the LDP's policies and criticized by many as wasteful pork barrel - to rescue the economy from its fourth recession since 2000.

Many economists say that prescription for "Abenomics" could create temporary growth and enable the government to go ahead with a planned initial sales tax rise in 2014 to help curb a public debt now twice the size of gross domestic product.

But it looks unlikely to cure deeper ills or spark sustainable growth, and risks triggering a market backlash if investors decide Japan has lost control of its finances.

Japan's economy has been stuck in the doldrums for decades, its population ageing fast and big corporate brands faltering, making "Japan Inc" a synonym for decline.

Consumer electronics firms such as Sony Corp are struggling with competition from foreign rivals and burdened by a strong yen, which makes their products cost more overseas.

Japan's main opposition Liberal Democratic Party's (LDP) leader and former Prime Minister Shinzo Abe raises his hands atop a campaign van at Akihabara electronics store district in Tokyo, Dec 15, 2012, on the last election campaign day ahead of Sunday's general election. [Photo/Agencies]

Prime Minister Yoshihiko Noda's Democratic Party of Japan (DPJ) surged to power in a historic victory in 2009 promising to pay more heed to consumers than companies and put politicians, bureaucrats, in charge of policymaking.

Many voters now feel the DPJ pledges were honored in the breach as the novice party struggled to govern and to cope with last year's huge earthquake, tsunami and nuclear disaster and then pushed through an unpopular sales tax increase with LDP help.

Voter distaste for both major parties has spawned a clutch of new parties including the right-leaning Japan Restoration Party founded by popular Osaka Mayor Toru Hashimoto.

Surveys show the DPJ, hit by a stream of defections, is likely to win fewer than 100 seats, less than a third of its tally in 2009.