How is BQ veto fo a LIb-NDP coalition possible?

The Rational Number: How is BQ veto of a Lib-NDP coalition possible? < read me.

Only the partisan assumption that the Conservatives would vote against the Lib-NDP coalition consistently without regard to the matter of the vote holds up the argument of a BQ veto. Of course everything depends on the subject matter of the vote, but that nevers appears in those Conservative-minded talking points.