The claim is subjective, but the public record shows UKIP included members who were active elected politicians, not just fringe figures. Mike Nattrass’s European Parliament profile shows him as a UK Independence Party national party member from 14-07-2009 to 03-11-2013 and a member of the Committee on Transport and Tourism, with parliamentary questions and written declarations. (europarl.europa.eu) That makes the blanket statement 'all UKIP members are nutters' unsupported; on a literal reading, 'Not all of Ukip's members are nutters' is true. Sources: European Parliament MEP profile for Mike Nattrass (`https://www.europarl.europa.eu/meps/en/28506/MIKE_NATTRASS/history/7`); European Parliament MEP directory (`https://www.europarl.europa.eu/meps/en/directory/all/all`).