id,polling_on,is_notional,commons_library_briefing_url,valid_vote_count,invalid_vote_count,electorate_population_count,parliament_period_id
4,2019-12-12,0,https://commonslibrary.parliament.uk/research-briefings/cbp-8749/,32014110,117919,47562702,58
5,2019-12-12,1,,32014119,0,47558398,58