Tend to disagree: if no party has enough votes to form it's own government, it'll be the largest party who is allowed to have it's first chance to create a coalition - the Tories could cobble together DUP, Lib Dem and UKIP or whoever and try and govern the country that way. The only way Labour will have first chance to create a coalition will be to have more seats than the Tories, and the SNP will scupper that.