[JURIST] Hundreds of thousands of protesters converged on Madrid Saturday to protest proposed legislation that would recognize same sex marriage. The lower house of the Spanish Parliament [official website] approved the measure in April [JURIST report], and the Senate is expected to vote in upcoming weeks. Public response to the measure has been mixed. The Catholic Church [Spanish Catholic Bishops website, in Spanish] and Spains Popular Party [party website, in Spanish] have led opposition against the measure [JURIST report], while an opinion poll conducted by the Center for Sociological Investigations indicates 66 percent of Spaniards favor legalizing gay marriage. AP has more.