All these comments about being "brainless" or just "having nice hair" is a long Conservative propaganda line that started well before Trudeau became PM.  Ronald Reagan was derided before his election as just being "an actor."  The truth is that Trudeau would not have won a majority government if he was as brainless as his opponents made him out to be. You need to ask why the Conservatives and Harper were not smarter than Trudeau since they lost to him. Trudeau campaigned on the use of fiscal policy to stimulate growth and he was ahead of the curve on this idea with Trump now being elected and feted for using the same idea. Low interest rates have been proved to have no effect to stimulate growth since 2008.  Trudeau also skillfully used a carbon tax plan to make pipeline development politically viable while Harper used malicious tactics against the environmental side and thus achieved nothing to get oil to tidewater. Harper was the cartoon.