Presidential finality on disqualification determinations requires consultation with the Election Commission and permits Commission inquiry. Vests final authority in the President to decide questions whether a State Legislature member is disqualified under Article 191(1), and whether a person found guilty of an electoral corrupt practice at a State Legislature election is disqualified for membership of Parliament or a State Legislature, including the period, removal, or reduction of such disqualification; the President must consult the Election Commission, which may make such inquiry as it thinks fit.