History. Since 1972, the Iowa caucuses have had a 55% success rate at predicting which Democrat, and a 43% success rate at predicting which Republican, will go on to win the nomination of their political party for president at that party's national convention. Source: Wiki
History. Since 1972, the Iowa caucuses have had a 55% success rate at predicting which Democrat, and a 43% success rate at predicting which Republican, will go on to win the nomination of their political party for president at that party's national convention. Source: Wiki