Interesting exercise to find out a bit more about it.
The European Court of Human Rights isn't an EU body. It is the court of last resort for people living in countries that have signed the European Covention of Human rights and includes more countries than those in the EU. Not every country has signed that they agree with every part of the convention. All members of the EU have signed the convention.
http://en.wikipedia.org/wiki/Territoria ... man_Rights
As for voting, that question was answered in Parliament.
Prisoners may vote in 16 countries: Albania, Bosnia and Herzegovina (unless serving a sentence imposed by the International Tribunal for the former Yugoslavia), Cyprus (tho
Iceland, Lithuania, Portugal, Slovenia, Spain, Sweden, Switzerland and Ukraine.
Prisoners may frequently/sometimes vote in 13 countries: Austria, Belgium, France, Germany, Greece, Italy, Luxembourg, Malta, the Netherlands, Norway, Poland, Romania and Turkey.
Prisoners cannot vote in 13 countries: Armenia, Azerbaijan, Bulgaria, Estonia, Georgia, Hungary, Ireland, Latvia, Liechtenstein, Moldova, Russia, Slovakia and the United Kingdom.
Italy and Austria have also had judgements against them on voting rights of prisoners.
if you were in Spain and your human rights were contravened, you could (in the last resort) appeal to the ECHR. Spain had 13 judgements against it last year (UK had 21, Russia 217)