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(Tuesday, April 5, 1960, polls open 7:00 a.m.-8:00 p.m. CST; during the 1960 Democratic Party presidential primaries) — Senator John F. Kennedy of Massachusetts defeated Senator Hubert H. Humphrey today in Wisconsin in the first major primary for the 1960 Democratic presidential nomination.

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Kennedy defeated Humphrey, from neighboring Minnesota, by a margin of 56 to 44 percent, 478,118 to 372,034 votes.

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Recalling the experience of 1928 Catholic Democratic presidential nominee Al Smith, many wondered if anti-Catholic prejudice would affect Kennedy’s chances of winning the nomination and the election in November.

To prove his vote-getting ability, Kennedy challenged Humphrey, a liberal, in the Wisconsin primary.

Although Kennedy defeated Humphrey in Wisconsin, the fact that his margin of victory came mostly from heavily Catholic areas left many party bosses unconvinced of Kennedy’s appeal to non-Catholic voters.

Kennedy next faced Humphrey on May 10, 1960, in the heavily Protestant state of West Virginia, where anti-Catholic bigotry was said to be widespread.