He didnt just like a Facebook page of another party he liked a comment endorsing a vote for them. Thats the kind of thing that can get you turfed as a candidate. Facebook isnt a toy its a serious playing field for those looking for information on politics.
Ive liked things on Facebook about other parties myself before but I would never endorse voting for them.
This doesn't seem a little ham-fisted and authoritarian? As Caissa said, there were multiple comments in that post. And it's a singular facebook like - it's not like he's riding around town with a bullhorn shouting "Vote Green!"
Especially when you compare it to last November, when the NB NDP posted an editorial on their website that referred to the Elsipogtog protestors as terrorists. Cardy justified the decision to post it without comment because it included a reference to the NDP, and their media policy was to highlight all press.
So re-publishing something that borders on hate speech is fine if it also happens to mention the NDP. But 'liking' a comment from another party? That's totally over the line.