Elections that killed the viability of a state party?

[Frodo]

Honestly,  the most impressive collapse of a 'state' level party in recent times is not even in America. The PLQ seemingly remains permanently lost, despite forming a solid chunk of Quebec provincial governments. They collapsed hard in 2018, fell even harder in 2022, and are still in the dumpster with the CAQs polling struggles right now.

Do you see that happening to the SNP in Scotland this year and in 2026? 

[OSR stands with Israel]

Honestly,  the most impressive collapse of a 'state' level party in recent times is not even in America. The PLQ seemingly remains permanently lost, despite forming a solid chunk of Quebec provincial governments. They collapsed hard in 2018, fell even harder in 2022, and are still in the dumpster with the CAQs polling struggles right now.

The only comparable event is to the collapse of white Dems in the South. An immediate fall with only the minority group clinging on.

What about the BC libs .

[EastwoodS]

California Republicans, 1994

https://en.wikipedia.org/wiki/1994_California_Proposition_187

I would say the attribution the decline of the CA GOP to prop 187 is a 2008/2012 Demographics is Destiny type myth. The Texas GOP held steady with a similarly booming Hispanic population. Latinos were always a cornerstone of the CA Dem coalition. The real reason was that the increasing nationalization of politics eliminated the dominance of the CA GOP over SoCal White suburbanites. Getting 75% of educated Whites in a coastal suburb like OC was never going to last. The end of the Cold War also was an important cause. Communist diaspora were no longer so heavily R and defense jobs disappeared.

Also, the Bay Area around this time was exploding, many articles came out around this time talking about all the young "moderate" men looking for tech jobs around San Francisco and how that could affect the 1997 CA Gubernatorial election and ones after that.