Tokyo Governor Yuriko Koike announced her resignation as leader of Kibo no To (Hope), the national party formed amid high expectations that ended up failing in the Lower House election.

Her decision was announced at a meeting of the party’s Diet members on Nov. 14.

After stepping down, Koike is expected to concentrate on her duties as governor of the capital.

Koike played a leading role in forming the Hope party in late September with the intention of ousting the administration of Prime Minister Shinzo Abe in the Oct. 22 Lower House election.

Expectations for the new party were high. Koike’s local party, Tomin First no Kai (Tokyo residents first association), had racked up a major victory against the ruling Liberal Democratic Party in the Tokyo metropolitan assembly election in July.

However, Koike soon came under criticism for weeding out liberal-minded members of the Democratic Party who wanted to run on the Hope ticket.

Politicians who felt unwelcomed by the Hope party formed the Constitutional Democratic Party of Japan, which won more seats than the Hope party in the election and became the main opposition party.

The ruling coalition of the LDP and Komeito retained a two-thirds majority in the Lower House.

Koike later indicated she would concentrate on her duties as Tokyo governor and leave Hope party matters to Yuichiro Tamaki, the Lower House member who was recently elected as co-leader, and other party Diet members.