OTTAWA—Former Quebec premier Jean Charest says he’s waiting to see party rules before deciding whether he will run to be the next Conservative leader. Charest met Wednesday night with MPs and senators at a hotel in downtown Ottawa at a reception planned by two people who want him to run. On his way in he told reporters he’s waiting for the party to release the rules of the race to see how long it will last. Charest said he wants to make sure it runs long enough for him to be able to properly campaign. So far Pierre Poilievre, the well-known Conservative MP from the Ottawa area, is the only declared candidate in the race. As Charest met behind closed doors with MPs and senators, Shannon Stubbs, a Poilievere supporter, tweeted out an image attacking Charest for supporting carbon pricing and the long-gun registry. “I’m with grassroots Conservative Party members. …