Spoken like someone who assumes the answer is self-evident.  No, local party members choose the local candidate.  When you say the "party chooses", well, who in the party chooses?  The local registered party members?  the party executive?  The voters (based on what)? A party list prepared by someone? 
Then, the vote happens.  Look at my example above.  Which 20% of NDP MP's get chosen?  How?  Is there a FPTP and what is left over is split on PR?  
I don't have a problem with PR, I would welcome it in my case.  HOWEVER, I just want to know how it is to be applied, the specifics, and nobody, including the PR supporters, answered that simple question.  Hence, that is why PR supporters deserve a F.  It's too bad.  Unless you have something specific, it is difficult to change from the current status.