Then we have primaries first. Two party groups dominate the European parliament, the conservative EPP-ED and the Party of European Socialists, PES. EPP-ED has 35% of seats, PES 27%. The election would after that essentially be decided by how the other parties sympathisers go.
So who would win the two important primaries. Starting with PES, Kuchinich is one of few candidates that has the right positions to actually be a candidate, so I say Kuchinich. And who of the rest would win the conservative primary? Clinton perhaps.
Then they would face of with the classical Capital vs. Unions supporting them. In the end I think the misogynic tendencies would defeat Clinton, giving a slim victory to Kuchinich.