Ordinary parties naturally struggle when faced with the ability of the Scottish National Party to foreswear traditional government for a perpetual campaign for independence. These are powerful rhetorical forces.
Cheap nationalism is an SNP speciality. It motivates some voters, but cannot fix a broken political system, a dismal situation in public health or revitalise a flagging economy.
Under the SNP, and especially under Nicola Sturgeon, government has largely ceased to work. Holyrood and the Scottish parliament are bypassed.
Sturgeon personally runs a never-ending campaign for independence. Both it and the government of Scotland are centralised in Bute House, the first minister’s residence. MSPs and voters are left out and forgotten.