In an unprecedented milestone for the Vatican and U.S. civic participation, Pope Leo XIV, the first American citizen ever elected to lead the Catholic Church, has officially submitted his mail-in ballot for Illinois’ 2025 U.S. midterm elections, marking the first time a sitting pope has cast a vote in a U.S. national electoral process. Born in Chicago, the 71-year-old pontiff, who was selected to occupy the Vatican’s highest office in May 2025, formally requested his mail-in ballot from the Will County Clerk’s Office on October 3, per records verified by NBC News. His participation in the democratic process, confirmed via an official statement from the Holy See Press Office, highlights a longstanding pattern of civic engagement that dates back decades: the press office noted Pope Leo has consistently exercised his voting rights as a U.S. citizen at every eligible opportunity, including during the years he spent serving in Peru prior to his elevation to the papacy. The statement further emphasized that the Holy Father “expresses his belief in the right and the duty of citizens to participate in democratic processes.” The historic vote comes against a backdrop of sustained, high-profile friction between Pope Leo XIV and the administration of U.S. President Donald Trump, which has unfolded across a range of divisive policy issues. Tensions first boiled over publicly in April 2025, after the pontiff issued a vocal call for immediate peace in the aftermath of joint U.S.-Israeli military strikes on Iran. Trump responded with sharp public criticism, stating, “I don’t think he’s doing a very good job,” and adding, “We don’t like a Pope that’s going to say that it’s OK to have a nuclear weapon. I’m not a big fan of Pope Leo.” In his own measured response, the pontiff told reporters per Reuters, “The mission of the Church is to preach the Gospel, to preach peace. If someone wants to criticise me for preaching the Gospel… I hope simply to be listened to because of the value of God’s words.” The high-stakes midterm elections, scheduled for nationwide polling on November 3, will determine which political party holds majority control of both chambers of the U.S. Congress, a outcome that will shape the final two years of Trump’s presidential term. Early in-person and mail-in voting is already underway in the vast majority of U.S. states, as both major parties pour resources into competitive races. Recent polling data indicates Democrats are heavily favored to flip control of the U.S. House of Representatives, with strong overperformance projected in traditionally Republican districts that delivered overwhelming support to Trump during the 2024 presidential election. The party also holds a realistic path to pick up enough seats to narrow or even seize a majority in the U.S. Senate, a trajectory that has pushed the Trump administration to host campaign rallies in deep-red, traditionally safe Republican states in a last-ditch effort to shore up flagging GOP support. The historic voting announcement also follows a recent major health scare for the pontiff: less than two weeks after he requested his Illinois ballot, the Vatican confirmed Pope Leo had undergone successful surgery to remove the lower lobe of his right lung, following a diagnosis of lung cancer. Despite the procedure, Vatican officials confirmed last week that the pontiff will proceed with his planned international pastoral tour in early November, with scheduled stops in Uruguay, Argentina, and Peru.