CREATE TABLE table_name_12 (party VARCHAR, years_in_senate VARCHAR, years_in_assembly VARCHAR)

Which Party has Years in Senate of , and Years in Assembly of 2012 present?
SELECT party FROM table_name_12 WHERE years_in_senate = "—" AND years_in_assembly = "2012–present"
SELECT "party" FROM "table_name_12" WHERE "2012–present" = "years_in_assembly" AND "years_in_senate" = "—"