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. (Voter turnout was 22.6% of the electorate.) Almost four years later, incoming Governor Luis Fortuño (from the New Progressive Party or New Party of Progress (NPP)) discarded the alternative of unicameralism claiming that the NPP's platform, rather than advocating unicameralism, supported submitting to the people a constitutional amendment proposing a substantial reduction in seats in the existing bicameral legislature.