Mark Carney stumbles through his rookie-politician week

News Snapshot:

Open this photo in gallery: Liberal Leader Mark Carney responds to a question during a campaign stop on April 1, in Winnipeg. Mr. Carney and his supporters had previously batted away several attacks as trivial or bogus but his poor judgment in the case of Paul Chiang will now be added to other real missteps.Adrian Wyld/The Canadian Press Everybody with a passing interest in Canadian politics knew how the story of Markham-Unionville Liberal candidate Paul Chiang would end: without Mr. Chiang as the Liberal candidate. Opposition parties knew it. Most Liberals did, too. Your mom knew it. Mark Carney didn’t....