However, a referendum on devolution in 1979 was unsuccessful as it did not achieve the support of 40 % of the electorate ( despite a small majority of those who voted supporting the proposal.

However, a referendum on devolution in 1979 was unsuccessful as it did not achieve the necessary support of 40 per cent of the electorate ( despite a small majority of those who voted supporting the proposal ) and the SNP went into electoral decline during the 1980s.

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