Prime Minister Junichiro Koizumi was re-elected head of the ruling Liberal Democratic Party on Saturday, a sweeping victory in a vote by LDP politicians and the party's local chapters over his three challengers.

The much-anticipated victory gives Koizumi three more years as party president -- a position that ensures he remains prime minister due to the LDP's Lower House majority.

Koizumi told a news conference after his victory that he will name new LDP executives on Sunday and a new Cabinet on Monday.