There must be days when Justin Trudeau, his patrimony notwithstanding, must be asking himself why the heck he wanted to be prime minister.

The easy days of happy selfies with adoring fans and rave reviews in foreign media are fading. Sunny ways are being overtaken by harsh reality.

For Trudeau, reality means no more playacting as Donald Trump’s obliging northern neighbour and best pal. Reality now means fending off the bully who amuses himself by alienating his closest allies and trading partners, a president who thinks trade wars are good politics and are easy to win.

If desire for change is the most potent force in politics these days, momentum is the most unpredictable one.

No one can predict when momentum will begin to build, how far it will go, or when it will end.

Heading into Sunday night’s leaders’ debate, it was clear that momentum in the Ontario election had shifted, dramatically, from the Progressive Conservatives to the New Democrats. But no one could predict whether the momentum would be enough to carry Andrea Horwath into office, or whether it would stall or even shift again before June 7.

Is there an Honest Broker in the Progressive Conservative party of Ontario?

If so, please take Doug Ford aside, sit him down, and suggest he hush up while you explain some of the facts of political life, Ontario style.

Be patient, Honest Broker. Ford is new and a bit brash. He won’t like it when you recall what happened two decades ago when the province was won by a leader wedded to a platform of rooting out so much waste at Queen’s Park that he could simultaneously slash taxes and eliminate the deficit without, as that leader promised, touching any basic services.

The June 7 election in Ontario can be reduced to one simple question.

Are normally cautious Ontario voters so tired or fed up with Kathleen Wynne and her Liberals that they are ready to gamble on Doug Ford, the closest thing to a Donald Trump that Canada has produced?

The answer appears to be a resounding Yes.