CREATE TABLE table_203_609 (id NUMBER, "#" NUMBER, "matters" CLOB, "sections of the constitution allowing their institution" CLOB, "eligible petitioners" CLOB, "type" CLOB)

how many matters require at least one tenth of the existing representatives or senators ?
SELECT COUNT("matters") FROM table_203_609 WHERE "eligible petitioners" = 'at least one tenth of the existing representatives or senators'
SELECT COUNT("matters") FROM "table_203_609" WHERE "eligible petitioners" = 'at least one tenth of the existing representatives or senators'