on radio. He set the date of his coronation for 4 November, sooner than is traditional and a Tuesday rather than the traditional Sunday, perhaps because it was the feast of Saint Charles Borromeo, whom Roncalli had made the subject of a five-volume study. He was reported to have expressed regret that he would "never again see Venice". Early reports said that Roncalli led in the balloting on the morning of the third day and then received almost unanimous support in that afternoon's single ballot. With the election of a 77-year-old, many churchmen interpreted the choice of Roncalli as picking a "pope of transition". John XXIII himself said, when he took possession of the Lateran Basilica on 23 November 1958: "We do not have the right to see a long way ahead of us." In early November, Pope John wrote letters to Mindszenty and Stepinac expressing regret that they were unable to participate in the conclave. On 17 November he announced a consistory to create new cardinals on 15 December. Ignoring the longstanding maximum of 70 members, he increased the size of the College to 74 members. Siri thesis Some Sedevacantists believed that Cardinal Siri was actually elected Pope in the 1958 papal conclave on 26 October, taking the name of Gregory XVII, but that his election was then suppressed, duress having been applied to him, especially by the French Cardinals led by the Dean of the College of Cardinals, Eugène Tisserant, who would have brought up the threat of anti-Catholic turmoils in USSR-dominated Eastern Europe, if Cardinal Siri, considered a staunch anti-Communist, became the new Pope. There was confusion prior to the final election concerning the smoke and who was really elected pope. While Siri was a favourite for election before the conclave, he failed to secure enough votes from traditionalist cardinals once the conclave started , because at 52 a long pontificate would have been anticipated, and his election would have likely prevented other cardinals who wished to be pope from being elected. Conclave reform John XXIII waited several years before issuing a motu proprio to modify certain aspects of the procedures for a papal conclave. In Summi Ponitificis electio, issued on 5 September 1962, he laid out additional rules for impressing all participants with the need for secrecy, even warning the cardinals about communications with their staff (paragraph XIV). His one practical modification reversed his predecessor: Pius