evidence: Democratic Unionist Party - seats 25 - change since 2017 -3 - first preference votes 184,002 - share of 1st preference votes 21.3% [...] Ulster Unionist Party - seats 9 - change since 2017 -1 - first preference votes 96,390 - share of 1st preference votes 11.2% [...] - change in 1st preferences votes -1.0%