OTTAWA—Cabinet ministers will be on parade at the Liberal convention today but all eyes will be on someone who’s never overtly dipped a toe in partisan politics before now: Mark Carney. The question on everyone’s mind is whether the former central banker’s appearance at the convention—in conversation this evening with rookie Liberal MP and convention co-chair Marci Ien—signals an intention to finally take the plunge into politics. For a decade, Liberals have dreamed of one day persuading the former governor of the Bank of Canada to run for the party and, maybe one day, even lead it. Carney quietly flirted with the idea of a leadership run in 2012, courted by Liberals smarting from a historic electoral thumping and desperately searching for a saviour. But amid criticism that even the smallest whiff of partisanship was undermining the independence crucial to a central banker, Carney eventually squelched the speculation by saying …