the paper says businessman carsten maschmeyer, seen here, funded an aunt -- an ad campaign for a booky christian wulff. because, 40,000 euros. carsten maschmeyer said christian wulff did not know about the idea, but the opposition is asking questions. >> that is at least some clarity that we're getting bit by bit. the question is, is that everything? >> the new revelations come just as the president is fending off allegations over half million euro home loan that he got from other friends. his lawyers are opting for transparency. they have been inviting reporters to inspect files relating to the deal. angela merkel is also feeling the pressure. the she stirred christian wulff into office last year. >> the president is doing an excellent job. he will present a clear of the questions that have been raised. >> christian wulff himself has been continuing with his -- with his engagements and insists he will not be standing down. it seems the public is behind him. a new poll says 70% believe he should stay on as president. >> for more, we talk to our chief political correspondent built -- m