John Mason has said he will speak up for his constituents on “personal”, but not constitutional, matters

An SNP MSP who said he would refuse to speak up for constituents who oppose Scottish independence is asking voters for their political beliefs when they contact his website.

Four questions are put to anyone submitting an online contact form to John Mason, three are about which political parties they most closely identify with and one asks if they believe that Scotland should be an independent country.

In drop down menus for the political party preferences people can select “other” or “undecided” and numerous mainstream and minority parties. There is no option for no answer and three options for the independence question: yes, no and undecided.

Senior SNP sources were furious about Mr Mason’s questionnaire, which follows a week of controversy for the MSP. On