Ed Miliband is being widely reported in News media as having ruled out a coalition with the SNP in the event of a hung parliament. In a formal coalition ( such as exists with the current Tory/Lib Dem arrangement) both parties hold a number of cabinet positions in the government.
Nicola Sturgeon, has already stated such a formal coalition was never favoured by the SNP anyway. SNP would offer Labour support to be able to govern but would look for policies that were favourable to Scotland, as well as advancing progressive politics for the whole of the UK in return.
The whole non issue comes as Miliband tries to damp down the near hysteria that’s been building south of the border over SNP potentially being in formal government and having Alex Salmond as Deputy PM! Parties like The Conservatives and UKIP in particular have been talking up the “fears” of the southern vote that their beloved Scotland ( sic 2014 referendum) might exact some price from the supposed democracy that puts a government in Westminster.
What you can be sure of is a Vote for SNP will result in Scotland’s interests being kept front and centre to ensure the elements mentioned in the now very discredited Vow are delivered.