It was a bombshell that rocked provincial politics — Tom Osborne, the longest-serving MHA in the Tory caucus, announced he was leaving the party to sit as an Independent.

Osborne cited the leadership of Premier Kathy Dunderdale as his reason for leaving.

Dunderdale is the featured guest on this week's episode of On Point with David Cochrane, answering questions about Osborne's decision to depart the Tory fold.