BQ and FF are in no such danger. A case could be made for the LDP, but I'm not holding my breath. What's said of UCR is just as true of the Peronists... and has been true for decades for both of them. If they've nominally survived this long, they might well do so for another century.
The only party in real danger of disappearing is Israel's Labour.
Mainly agree with what Lewis said. The BQ and FF will die when Quebec stops being different and people forget the Civil War (in other words, never). Disagree on the LDP; they've always been a government party, and the last party like that to lose power the way it looks like the LDP will was the Albertan Socreds, who never recovered. Argentinian political labels are useless nowadays. In Israel, we're seeing either a shift to the right in the electorate or a shift to the left of the parties (or possibly both). Either way, Kadima has become the main party of the left, Likud is increasingly taking the center, and YB is the new mainstream right. Given the way Israeli politics works, it's a marvel that Labor has been around so long.
