An exception to the above exists in the form of "lijstduwer" ("list pushers"), famous people (former politicians, but also sports people) who are put on the candidate list but will not accept a seat when they get enough votes for one. During the municipal elections in 2006 professor Joop van Holsteyn criticised this practise, saying someone on a candidate list should also be a serious candidate. This view is shared by other political scientists, but less so by politicians, who say that lijstduwers are on the list not to get elected but to show that they support that party and that the fact that they are at the bottom of the list makes it obvious they are not intended to get a seat. Still, writer Ronald Giphart (1998) and skater Hilbert van der Duim (1994) got a municipal council seat, which Giphart refused to fill. Professor Rudy Andeweg says this is close to fraud because the law requires someone on the candidate list to declare in writing to be willing to fill a seat.