In the shadow of intense campaigning for Sunday's Lower House election, nine people are quietly waiting for voters to decide whether they deserve to stay in the nation's top judicial posts.

Held simultaneously with the general election, the 19th national referendum on Supreme Court justices will ask voters to review the appointment of nine of the 15 on the bench, who were installed after the last Lower House poll, in 2000, to judge if they have fulfilled their roles as "guardians of the Constitution."

The referendum is in keeping with Article 79 of the Constitution, which grants public control over the tenure of Supreme Court justices, who have the ultimate power to determine the constitutionality of any legislation or government act.