On December 17, 1959, a letter from Kennedy's staff which was to be sent to "active and influential Democrats" was leaked stating that he would announce his presidential campaign on January 2, 1960. On January 2, 1960, Kennedy announced his candidacy for the Democratic presidential nomination. Though some questioned Kennedy's age and experience, his charisma and eloquence earned him numerous supporters. Many Americans held anti-Catholic attitudes, but Kennedy's vocal support of the separation of church and state helped defuse the situation. His religion also helped him win a devoted following among many Catholic voters. Kennedy faced several potential challengers for the Democratic nomination, including Senate Majority Leader Lyndon B. Johnson, Adlai Stevenson II, and Senator Hubert Humphrey.