The Democratic Party of Japan submitted a bill to the Lower House Monday aimed at cutting back on what many in the public believe is the unfair advantage enjoyed by so-called hereditary politicians.

The revision proposed by the largest opposition party to the Political Funds Control Law would restrict relatives within three degrees of kinship — up to nieces or nephews — of retired or deceased Diet members from inheriting a seat and running in the same electoral district as their predecessor.

One-third of ruling Liberal Democratic Party lawmakers are said to have inherited their father's or grandfather's constituencies, as well as their campaign machines and political funding sources.