of those election polls with at least 1600 polls, what ones have similar respondents as rasmussen, 2012 presidential election, 2012-10-18?
(AND government.election_poll (AND (JOIN government.election_poll.type_of_people_polled (JOIN government.poll_respondent_category.polls m.0n64hg7)) (ge government.election_poll.number_polled 1600^^http://www.w3.org/2001/XMLSchema#integer)))