Marc Garneau has officially put his name forward to be the interim leader of the federal Liberal Party, CBC News has learned.

Former Liberal leader Michael Ignatieff quit his post after leading the party to its worst showing in history in the May 2 federal election.

The Liberals were reduced to 34 seats in the House of Commons, down from 77, and won only 18.9 per cent of the popular vote.

Ignatieff also lost his Toronto-area seat in Etobicoke-Lakeshore.

Garneau was re-elected with a 658-vote margin in Montreal's Westmount-Ville-Marie riding, which he's represented since 2008.

He's the first member of the shrunken Liberal caucus to offer leadership services for the party's rebuilding process.

The party is still discussing succession issues.