At first the SNP sought only the establishment of a devolved Scottish assembly, but in 1942 they changed this to support all-out independence. This caused the resignation of John MacCormick from the SNP and he formed the Scottish Covenant Association. This body proved to be the biggest mover in favour of the formation of a Scottish assembly, collecting over two million signatures in the late 1940s and early 1950s and attracting support from across the political spectrum. However, without formal links to any of the political parties it withered, and devolution and the establishment of an assembly were put on the political back burner.