Scotland's future will be debated in a final TV showdown on Monday just weeks before a historic independence referendum with the pro-breakaway camp, behind in the polls, looking for a game-changing performance from its leader Alex Salmond.

As voting day, Sept. 18, draws nearer, polls show that the campaign to sever Scotland's 307-year union with England and leave the United Kingdom is trailing in the polls, as it generally has been from the start.

Several recent polls have shown its support climbing a few points, but according to the most recent "poll of polls" on Aug. 15 — based on an average of the last six polls and excluding undecided respondents — support for the pro-independence camp stands at 43 percent against 57 percent for opponents.