Ontario NDP Leader Marit Stiles says finishing second in the last provincial election wasn't good enough, and that she isn't taking anything for granted ahead of a mandatory leadership review at next month's party convention.

In an interview with CBC News, Stiles was candid about the party's struggles during the snap vote called by Premier Doug Ford earlier this year and the work she needs to do to maintain the confidence of her party. She has been criss-crossing the province on tour this summer…