Shannon County, South Dakota 77.34% Greene County, Alabama 68.32% Charles City County, Virginia 67.84% Counties with highest percentage of the vote (Other) Jefferson County, Idaho 27.51% Lemhi County, Idaho 19.77% Fremont County, Idaho 19.32% Bonneville County, Idaho 18.97% Madison County, Idaho 17.04% Voter demographics Nixon won 36 percent of the Democratic vote, according to an exit poll conducted for CBS News by George Fine Research, Inc. This represents more than twice the percentage of voters who typically defect from their party in presidential elections. Nixon also became the first Republican presidential candidate in American history to win the Roman Catholic vote (53–46), and the first in recent history to win the blue-collar vote, which he won by a 5-to-4 margin. McGovern narrowly won the union vote (50–48), though this difference was within the survey's margin of error of 2 percentage points. McGovern also narrowly won the youth vote (i. e., those aged 18 to 24) 52–46, a narrower margin than many of his strategists had predicted. Early on, the McGovern campaign also significantly over-estimated the number of young people who would vote in the election: They predicted that 18 million would have voted in total, but exit polls indicate that the actual number was about 12 million. McGovern did win comfortably among both African-American and Jewish voters, but by somewhat smaller margins than usual for a Democratic candidate. McGovern won the African American vote by 87% to Nixon's 13%. Post-election investigations into the Watergate break-in On June 17, 1972, five months before election day, five men broke into the Democratic National Committee headquarters at the Watergate hotel in Washington, D. C.; the resulting investigation led to the revelation of attempted cover-ups of the break-in within the Nixon administration. What became known as the Watergate scandal eroded President Nixon's public and political support in his second term, and he resigned on August 9, 1974, in the face of probable impeachment by the House of Representatives and removal from office by the Senate. As part of the continuing Watergate investigation in 1974–1975, federal prosecutors offered companies that had given illegal campaign contributions to President Nixon's re-election campaign lenient sentences if they came forward. Many companies complied, including Northrop Grumman, 3M, American Airlines, and Braniff Airlines. By 1976, prosecutors had convicted 18 American corporations of contributing illegally to Nixon's campaign. See also 1972 United States House of Representatives elections 1972 United States Senate