Personally I don't think you can even say that. You can say that only 1/3 of people voted for a specifically No Deal Brexit Party but that is all. It is quite possible that some voters want No Deal but still voted for Labour and Conservatives. You could say that some people voting for the Brexit Party are actually just voting for Farage and don't really know what he stands for. I think all we can take from the EU elections are that the country is still very divided, still doesn't know what it wants and is unlikely to coalesce behind one path any time soon.