BERLIN, March 15 (Reuters) - Turkish citizens in Germany must be allowed to vote here in the April referendum to grant more powers to Turkish President Tayyip Erdogan, a spokesman for Germany's foreign ministry spokesman said on Wednesday.
"We of course stand by our democratic principles and for us that means that Turkish voters in Germany must be allowed to take part in the key decision about the future constitution of Turkey," said the spokesman.
He also said foreign politicians were allowed to campaign in Germany but that there were rules on security and preserving domestic order which were applicable.
(Reporting by Madeline Chambers and Michelle Martin)