Simplify the following text for a Grade 12 native English-speaking person.
Original: The UMP is a member of the European People 's Party ( EPP ) , the Centrist Democrat International ( CDI ) and the International Democrat Union ( IDU ) .
Simplified: The UMP is a member of the European People 's Party ( EPP ) , of the Christian Democrat International ( CDI ) and of the International Democrat Union ( IDU ) .