Voting has begun across Japan in parliamentary elections which are widely predicted to sweep the opposition into power.
Opinion polls indicate that the Democratic Party of Japan (DPJ), led by Yukio Hatoyama, will put an end to more than 50 years of almost continuous rule by the Liberal Democratic Party (LDP) of Taro Aso, the prime minister.
Voting booths opened at 7am local time (22:00 GMT on Saturday) and close at 8pm (11:00 GMT on Sunday), with exit polls expected shortly afterwards.
About 103 million Japanese are eligible to vote, with turnout expected to be high.
In advertisements published in major newspapers on Sunday, the DPJ confidently predicted: "Today, a government change."
"A courageous decision by the people will open the door for a historic and major event," it said in a separate statement. "Please join in this big task to change Japan and protect the people's lives."
The LDP has ruled for all but 10 months since it was founded in 1955, but the DPJ already controls the less powerful upper house of parliament following elections in 2007.
'Hope tomorrow'
In its own advertisements, the LDP urged voters: "Don't destroy Japan".
"Hope tomorrow can only come from stability today," it said.
Al Jazeera's Steve Chao, reporting from Tokyo, said that last-minute surveys indicated that the opposition was still on its way to a landslide victory.
"There is still a great deal of dissatisfaction among the public with the ruling government and its ability to govern the country."The economy is in the worst state since the second world war, unemployment is at 5.7 per cent, which means that three and a half million people are unemployed.
"The opposition has been [conducting] on an Obama-style campaign, promising massive changes, to take on the heavy bureaucracy created by the ruling government that is largely blamed for the problems of the country."
Surveys in major newspapers, including the Mainichi and the Asahi, said that the DPJ was likely to win more than 320 seats in the 480-member lower house of parliament.
Hatoyama travelled to the city of Sakai in western Japan on Saturday - the final day of campaigning - where he repeated his call for voters to support change.
"This is an election to choose whether voters can muster the courage to do away with the old politics," he said.
Cash handouts
Under a mantra of "Putting People's Lives First", the DPJ has offered a platform heavy on social-welfare initiatives, including cash handouts for job seekers in training and families with children.
Our correspondent said that Aso had also come out strongly on Saturday, making a his last-minute appeal to urge voters "to reconsider and to question whether they could trust the opposition to run the government at a time of economic crisis.
"He has also stressed that he needs more time to implement the massive economic reforms to deal with the global financial crisis.
"Japan is the world's second largest economy and that's why it matters a lot, not only to the voters down here but to the rest of the world because what happen world because what happens in Japan is often a bellwether for the health of the world’s financial status."
