I see that the national nominees for best act from different countries across Europe are now listed for voting at the MTV Europe Music Awards website http://ema.mtv.co.uk/ whoever wins each national category will then battle it out against each other. I haven't got time tonight to list all of the nominees from everywhere, but here are some.
UK & Ireland act: Adele, Duffy, Leona Lewis, The Wombats, The Ting Tings
Swedish act: Adam Tensta, Kleerup, Lazee, Neverstore (them again??) and Veronica Maggio
French act: David Guetta, BB Brunes, Zaho, Sefyu, Feist (since when was Feist French??)
German act: Die Arzte, Fettes Brot, Mia., Sido, Sohne Mannheims
Norwegian act: Karpe Diem, Erik & Kriss, Madcon, Ida Maria, Kakkmaddafakka (!!)
If you go to the MTV EMA website and click the link to voting then scroll down to the bottom right side of the page there is a drop-down picklist of all the countries from which you should be able to find the various national nominees.