The debate, now playing in one corner of my computer screen, is almost over but my overall sense is that Charest has done well, Boisclair less well (calm, relaxed demeanour but prone to getting too technical), and Dumont has come over as too agitated, excited and defensive, clearly with major contradictions in his platform. We will see what the media types have to say.
But Charest is apparently behind. He was nominally in first place in the latest CROP poll, but third among francophones. My model says this poll would produce a weak PQ minority. In 2003 the Liberals picked up strongly among the undecided after the 2003 debate. They need to do it again.