The Liberal Democratic Party is on course to win a majority in the Dec. 16 general election, returning to power after three years, a Kyodo News survey showed Wednesday, based on responses from voters who are not among the significant ranks of the undecided.

The main opposition party, headed by Shinzo Abe, and its ally, New Komeito, could together secure nearly 300 seats in the 480-seat House of Representatives, according to the telephone survey conducted over two days through Wednesday covering 123,700 eligible voters randomly selected across the country.

The Democratic Party of Japan, which swept to power in the previous Lower House election in 2009, putting an end to the LDP's almost 50 years of uninterrupted rule, may only secure around 70 seats, compared with its current strength of 230 seats, the survey showed.