A record 28 women were elected to the Upper House on Sunday, winning 17 seats in electoral districts and 11 via proportional representation.

That's two more than the former record of 26 set in 2007, and six more than the 22 women who won in the previous Upper House election in 2013.

The success ratio among the 96 female candidates was 29.2 percent.

By party, 10 of the 12 women supported by the ruling Liberal Democratic Party won a seat, as did seven of the 11 from the Democratic Party, and all three from Komeito.

In addition, two each from the Japanese Communist Party and Osaka Ishin no Kai, one each from the Social Democratic Party and Seikatsu no To (People's Life Party), and two independents won seats.

The average age of the winning female candidates was 49.2, compared with 56.6 for men.

By region, new female lawmakers from the LDP and Osaka Ishin won two of the four seats that were open in Osaka.

In Tokyo, where six seats were up for grabs, both the LDP and Komeito saw one incumbent each win re-election.