OTTAWA—A western Conservative MP who lost votes in the party’s disappointing election defeat two weeks ago says leader Erin O’Toole must provide a full accounting of how he plans to win back the trust of some supporters. Shannon Stubbs represents the rural Alberta riding of Lakeland, and says she had 15 percent fewer votes cast in her name this election compared with 2019. She says she’s not happy with how the party lost incumbent MPs in large cities across the country, including in Alberta, a Conservative heartland. Stubbs was one of 119 Conservative MPs gathered in Ottawa on Tuesday behind closed doors to decide, among other things, whether they want the power to review O’Toole’s leadership. She says the party’s grassroots members should also get to have their own review of O’Toole within six months instead of waiting until a scheduled one in 2023. Stubbs believes some of her vote …