Assuming that illegal aliens voted (almost certain, although to an unknown extent), how many voted Democrat and how many voted Republican? The results from last night suggest there's not a huge illegal immigrant constituency for any party.
I could be wrong on this, but the results from last night were so lopsided that it's not at all clear.
I also wonder if the GOP will use this argument to push an amnesty program ("See? A lot of them must have voted for us! They're natural Republicans!"). Stupid Party is stupid, but predictable.