Nettled, it seems, by the lack of support from the Liberals during Tuesday's debate over extended sitting hours, New Democrat House Leader Peter Julian will hold a pre-caucus press conference to "expose the decision" of the third party to "sell out the legitimate rights of opposition parties, and help the Conservative government pass its legislative agenda."

ON MOBILE - Watch NDP House Leader Peter Julian here.

Some background, for those who missed the preceding procedural skirmish: The New Democrats voted against the government's proposal to add an extra shift to the parliamentary workday -- not, as its members made clear during the debate, because they don't want to sit late, but because they objected to a provision that will limit their ability to move motions and trigger votes outside regular House hours.

The Liberals, in contrast, voted with their Conservative colleagues, prompting much grumbling amongst their fellow travellers on the opposition side of the Chamber -- and, it seems, this morning's efforts to "expose" their decision by the New Democrats.