Not sure why you have to go to the far-right to find equivalents to US parties. The modern Tory-New Labour were pretty naked attempts to copy Reagan/Clinton respectively. There's a few differences here and there, but the only thing that really separated contemporary UK politics from US is we had a three-party system, and thus a naive belief there was a possibility of escaping that right-wing dichotomy - which has since shown to be laughably false - and so we're on our way to losing that.
Chuka Umunna seems to be never-endingly compared to Obama in our press. I may be misunderstanding you, but I doubt any possible minority would need to rely on his minority's vote to get elected?
I'm not sure I understand your question. I think a minority candidate would probably have to rely, in part, on strong support by his (and other) minority group. Of course, the nature of being a minority means that the support will have to cross over to the majority group(s).
Essentially we agree - I'm saying that the idea of a minority candidate appealing to his/her minority would be very low on the list for a campaign that can be classed anywhere near a success - they'd be targeting their ideological vote. You could get a 'European Obama' without that though, surely?
Belgiansocialist - click the link.