All eleven ridings in Northern Ontario were retained by their incumbent parties. The popular vote, however, shifted dramatically, with several Liberal incumbents holding on only very narrowly against NDP challengers. Most notably, Bill Mauro retained Thunder Bay—Atikokan by a margin of just 36 votes against John Rafferty, whom Mauro had defeated in 2003 by a margin of over 11,000 — Rafferty, in fact, spent much of the night leading Mauro. A judicial recount on October 31 increased Mauro's margin of victory to 50 votes. David Ramsay, similarly, trailed New Democrat John Vanthof in Timiskaming—Cochrane for much of the night, pulling ahead to a winning margin of 634 votes only in the final few polls to report. This was the narrowest margin of victory in Ramsay's 22-year career. Michael Gravelle also retained Thunder Bay—Superior North by an uncharacteristically narrow margin over Jim Foulds.