Monte took Kathleen Wynne to task for refusing to rule out tax increases on Ontario families. 

In Question Period, on Tuesday, December 2, Monte gave Wynne and her Finance Minister, Charles Sousa, six chances to say they wouldn't raise taxes. They refused to answer the question every single time.

You can see the exchange between Monte and the Premier here:

The next day Monte was on Andrew Lawton's radio show on CFPL in London discussing Wynne's tax plan and he issued this warning to all Ontario families - "Hold on to your wallets - Kathleen Wynne is coming for them."

You can hear a clip from the interview here: