Federal legislative powers are vested in a body the constitution refers to as a parliament. Ever since the somewhat paradoxical 1929 revision of the constitution, which strengthened the formal separation of powers in Austria at the instigation of sympathizers of fascism, Austria's legislature technically bears more resemblance to a congress than to a parliament. As a practical matter, however, it continues to function as a parliament anyway. Austria's parliament consists of two houses, the National Council and the Federal Council. The 183 members of the National Council are elected by nationwide popular vote under statutes aiming at party-list proportional representation. The currently 64 members of the Federal Council are elected by Austria's nine state legislatures under a statute allocating seats roughly proportional to state population size (The largest Bundesland being entitled to twelve members, the others accordingly, but no state to less than three.) In theory, the National Council and the Federal Council are peers. As a practical matter, the National Council is decidedly more powerful; the predominance of the National Council is such that Austrians frequently use the term "parliament" to refer to just the National Council instead of to the parliament as a whole.