The Scotsman, who plays Steve Arnott in the BBC hit drama, also took to social media to criticize ‘Tory Twitter and their bots’ after supporting Nicola Sturgeon’s party yesterday.
Compston, born in Greenock, urged Scots to vote for the SNP in the Scottish Parliament elections on May 6.
Voters across the country have been bombarded with leaflets since the campaign was officially launched at the end of March.
Compston shared a snapshot of a letter sent to his Greenock property by the Tories asking him to support Douglas Ross and Ruth Davidson (who are not running in this election) at the voting booth later this week.
He wrote on Twitter: “I see Twitter Scottish Tory and their rabid robots that an actor would voice an opinion.
“Apparently that’s not valid either because they claim I don’t live here.”
“Then could you do me, the postman and the environment a favor and stop sending me posts asking for my vote.”
At an SNP online event yesterday, Compston was joined by other high profile supporters including actors Alan Cumming and Brian Cox, police writer Val McDermid and Mogwai musician Stuart Braithwaite.
With the next Scottish Parliament election in a few days, the actor told voters: ‘The future of Scotland is in your hands. Don’t leave it to chance.
“The only way to ensure we re-elect Nicola Sturgeon as Prime Minister is to do #BothVotesSNP.
“Make sure you and all of your friends get out to vote. “