OTTAWA—Manitoba MP Candice Bergen is waking up with a new job today: unifying the Conservative caucus. The party’s former deputy leader was elected by her colleagues to serve as interim leader after a majority of MPs ousted Erin O’Toole from the top job. Bergen faces a caucus that has spent weeks divided and angry over O’Toole’s leadership since last year’s election loss. The party must also start preparing to pick a permanent leader. It will be the third such race in the past five years. Party president Rob Batherson told members that its national council will be appointing a leadership election organizing committee and will soon meet to discuss the issue. People are already speculating about who will enter the race. Tory finance critic and Ottawa-area MP Pierre Poilievre would be considered a strong contender if he decides to run. Southwestern Ontario MP Marilyn Gladu, who put her name forward …