In the wake of the referendum the disappointed supporters of the bill conducted a protest campaign under the slogan "Scotland said 'yes, officially launched in a Glasgow hotel on 7 March 1979. In particular, the Scottish National Party (SNP) carried out a survey of the electoral register in the Edinburgh Central constituency. This appeared to show that the register was so out of date that even in an area where major support for a "yes" vote might be expected, achievement of 40% of the electorate was virtually unattainable. This was because the majority of electors lived in older tenements or newer Council blocks of flats where flat numbers were not specified. The work of electoral registration staff to obtain an accurate current register was almost impossible.