My shot as political scientist:
You must make division with other parties on some Issue where you profile yourself to the right.
Questions is what kind of Right wing you want?
You can have Nationalistic Right wing with ůeft economic program ie PiS "Prawo i Spravedlnost" Law and justice in Poland.
You can have multi cultural economic right. ie Sarkozy.
So you must provide some competitive advantage over other parties.
Triggers could be Religion, Economics, Culture etc. Since SNP is local Party it would have to react to some central issues based on Scottish different attitudes to some central issue to the right.
I will make ATL case for most right wing SNP I can.
Culture:
1) Some high profile rape cases, murders by non Uk citizens.
2) Tories are trying to by in middle. "Muh diversity"
3) Scottish are more mad. For Example it happens in some districts important for Speaker,
4) They go mad. Tories will not protect you.
5) Tories can not counter - fear of losing parts of Anglia.
Economics:
1) Brutal tax cuts for middle classes.
2) Financed by LVT.
3) Voucher system for schools. - Catch middle high classes
4) Cut regulations (maybe only for small business).
5) More powers for Scots Parliament.
Military:
I want those bases!
I want more of Scottish units!
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https://en.wikipedia.org/wiki/Cleavage_(politics)