North Shore hopeful Tim James is refusing to give up on his push for Liberal preselection and will take Supreme Court action in a bid to overrule the NSW Liberal Party’s decision.

It is understood Mr James was notified on Tuesday that he had lost a second appeal against the preselection of his rival, the North Shore MP Felicity Wilson.

Tim James has appealed the preselection. Credit:Twitter

Ms Wilson, who gave birth to her first child, Eleanor, on December 29, narrowly survived a challenge to her career in November when she won a razor tight preselection battle for her seat against Mr James by one vote.

But Mr James claimed the result was invalid because an unidentified person bypassed identification checks to get inside the preselection event, or someone in the room voted twice in the ballots.