Section 1December 28, 1987, Sec./Art. 1

In case a vacancy arises in the Senate at least eighteen (18) months or in the House of Representatives at least (1) year before the next regular election for Members of Congress, the Commission on Elections, upon receipt of a resolution of the Senate or the House of Representatives, as the case may be, certifying to the existence of such vacancy and calling for a special election, shall hold a special election to fill such vacancy.f Congress is in recess, an official communication on the existence of the vacancy and call for a special election by the President of the Senate or by the Speaker of the House of Representatives, as the case may be, shall be sufficient for such purpose. The Senator or Member of the House of Representatives thus elected shall serve only for the unexpired term.