5 politcal parties that risk going extinct

[Stranger in a strange land]

While it's quite possible that the LDP will break up, at the end of the day there will almost certainly be a center-right party which calls itself the Liberal Democratic Party.

The Bloc probably isn't in danger of collapse, but it's likely that they'll do what the Alaska Independence Party did and become a SPINO (Secessionist Party in Name Only), as Quebec sovreigntism seems to be in decline.