The province was represented as a lone legislative district until 1972.

Instead, he successfully sought election to the Congress, representing the lone district of his home province.

Nueva Ecija was a lone legislative district from 1907 until 1928.

Provinces that send only one representative to the House of Representatives are called "lone districts".

In 1998 election, he became the representative of the lone district of Valenzuela municipality.

Also, provinces that comprise a lone congressional district are divided into at least two provincial districts.

He is now the representative for the lone district of Muntinlupa City.

In 1965, he was elected as a congressman for the lone district of Zambales.

Although qualified for a lone district in 1991 this was neglected by Lawmakers.

Although qualified for a lone district since 1991, this was neglected by lawmakers.