Many European countries have major parties which call themselves "Christian". But Wikipedia only lists 5 parties in all of Europe with an Islamic agenda, and 3 of them as defunct, leaving only "Party of Democratic Action" in Bosnia and Herzegovina and the "Finnish Islamic Party" (which doesn't seem to be very notable).
Notable parts of the European population self-identify as Muslims. In many EU states the percentage would be high enough to justify a political representation. There are even regions in Europe where Muslims outnumber practitioners of other religions, so the voter potential should be high enough to reach a notable representation on the communal level.
What are the reasons Muslims in Europe do not become more politically organized? Considering how afraid the radical nationalists in Europe are of "the Islamization of Europe", there doesn't seem to be much Islamic political activity to justify that fear.