Liberal Leader Justin Trudeau introduced Adam Vaughan as the newly nominated Liberal candidate in Toronto's TrinitySpadina riding Monday.

Vaughan won the nomination in a vote Saturday after weeks of discord over who would be allowed to run. The party disqualified one candidate, Christine Innes, alleging she bullied campaign workers. She is now suing Trudeau and others.

Another potential candidate dropped out, saying the contest was not a truly open nomination.