 The legislative spending in Puerto Rico, compared with the consolidated government budget is less than 1% of total government spending.Lacking the two-thirds majority necessary in both houses of the Legislature to submit constitutional amendments to the electorate, in 2004 the Popular Democratic Party's then-majority approved legislation to hold a referendum, not on a particular constitutional amendment as such, but on the general concept of switching from a bicameral to a unicameral system which was held on July 10, 2005.Attended by less than 25% of the islands' electorate, Puerto Rican voters approved the change to a unicameral legislature by 456,267 votes in favor, versus 88,720 against.