Carney is the prime minister of Canada. The NDP is the farther left party in Canada.
I almost would've said the liberals are the leftist party (supposed to be), but yeah the NDP of the past few years is a little further from the centre then they should be.
I've always thought of the NDP as being pretty firmly to the left of the liberals - with labour movements, democratic socialism, welfare, etc being pretty much the defining features of what I consider to be the left and core tenets of the NDP.
The liberals are obviously left of the conservatives, and a (mildly) left wing party, but not as far left as the NDP.
I wonder if you're working from a different definition of left than I am?
I'm probably thinking more of the ANDP...
NDP is basically the communist party in Canada, platform is handing out free stuff.