The big issue in OW-N is the Nortel pension issue, not sure how that will play for the Grits in the first by-election in the post John Tory-era that pits the Liberals and PC's in really direct contest.
As for Leeds-Grenville, it looks like a rejected Landowners backed candidate for the PC nomination could be gearing up for an independent run.
http://recorder.ca/ArticleDisplay.aspx?e=2441498&auth=CHRISTINE%20ENDICO...