The PC wing is in bad shape, but Chong getting close to 10% says they are not dead yet.  Remember this, the more right wing elements are disproportionately over 65 while the more moderate elements tend to be under 30.  Give it another decade and a lot of the Refomers will die off.  In the long-run the party will either moderate or die off and a PC like party will re-emerge.  Reformers are a dying breed in Canada.