SELECT DISTINCT ?s
WHERE {
?s <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Congressman>
?s <http://dbpedia.org/ontology/party> <http://dbpedia.org/resource/Democratic_Party_(United_States)>
MINUS {?s dbo:wikiPageRedirects ?o . }}
