Did Obama win any European ethnicities

[Benj]

I'm almost certain Obama won people of Scottish ancestry. It's the wealthiest ancestry group in the country, but they're heavily concentrated in New England and the rich-liberal parts of the NYC area.

OTOH, I seriously doubt Obama won Hungarians. True, most Hungarians in the US are Jews, but they're heavily Hasidic Jews, who vote overwhelmingly Republican in Presidential elections (like 90% McCain, probably similar for Romney). I don't think there are that many Reform or Conservative Jews from Hungary, and those are the Jewish groups that vote Democratic (plus Orthodox Jews outside of the NYC area).

There are very few self-IDed people of English ancestry in the South. It's basically New England (+upstate NY) and the Mormons. I think New England English would outvote the Mormons, but it's hard to say for certain.

I'm pretty sure of the recent European immigrants, Bosnians voted for Obama... Though I have no numbers to back that up.

They're Muslims. It would be shocking if they weren't at least 75% Obama, given recent trends.

[Benj]

As for the Bosnians, I believe most are Muslim as well so that probably would explain them going for Obama as the GOP are pretty unpopular amongst Muslims regardless of where they come from.  Not because Obama is Muslim (as most Muslims know he is not) but rather Islamophobia is quite rampant in the GOP so it would be pretty tough to vote for a party that is anti-Islam if you were a Muslim.

Only about 40% of Bosnians are Muslims. I think most in America are actually atheists (another very pro-Obama group). If they're not Muslim or atheist, they're probably Catholic.

That's not how residents of Bosnia identify. If you're Muslim, you're a Bosnian/Bosniak. If you're Catholic, you're a Croat, even if you live in Bosnia. If you're Orthodox, you're a Serb, even if you live in Bosnia.

This is because the Bosniak/Croat/Serb distinction is not ethnic at all; they're all ethnically indistinguishable. The distinctions are entirely religious. (Of course, in modern times they think of themselves as ethnically distinct, but those distinctions are of recent vintage and drawn entirely on religious grounds.)

Yes, we could use "Bosnian" to refer generically to everyone from the political entity of Bosnia and "Bosniak" to refer only to Muslim Bosnians. But Catholic Bosnians would call themselves Croats, and Orthodox Bosnians would call themselves Serbs, so you'd be left with only Bosniaks calling themselves Bosnians anyway. I guarantee you that at least 85% of all self-identified Bosnians in the US are Muslim. (Or atheist, I suppose--that's an entirely different issue. But still only those of Muslim heritage/background would call themselves Bosnian, even if they're non-religious these days.)