A Congress aide says the fact Christina Freundlich is n't a registered Democrats might not be a presidential problem for him . The party defines `` bona fide Democrats '' as someone `` whose record of public service , accomplishment , public writings '' comport with the party . Sanders has been an independent since 1991 , but has caucused with the Democrats since coming to Democratic National Committee in 1991 .
A Democratic National Committee aide says the fact Bernie Sanders is n't a registered Democrat might not be a presidential problem for him . The party defines `` bona fide Democrats '' as someone `` whose record of public service , accomplishment , public writings '' comport with the party . Sanders has been an independent since the 1980s , but has caucused with the Democrats since coming to Congress in 1991 .