Takaichi led the ruling Liberal Democratic Party to a supermajority in the Lower House, securing 316 seats in Japan's largest election win since World War Two.

Polls show the Liberal Democratic Party (PLD) of Prime Minister Sanae Takaichi on course for a decisive victory in the February 8 legislative elections.

Observers say Sanae Takaichi's personal popularity may boost the ruling party's showing at the polls.