Since 1980, a "gender gap" has seen stronger support for the Republican Party among men than among women. Unmarried and divorced women were far more likely to vote for Democrat John Kerry than for Republican George W. Bush in the 2004 presidential election. In 2006 House races, 43% of women voted Republican while 47% of men did so. In the 2010 midterms, the "gender gap" was reduced, with women supporting Republican and Democratic candidates equally (49%–49%). Exit polls from the 2012 elections revealed a continued weakness among unmarried women for the GOP, a large and growing portion of the electorate. Although women supported Obama over Mitt Romney by a margin of 55–44% in 2012, Romney prevailed amongst married women, 53–46%. Obama won unmarried women 67–31%. According to a December 2019 study, "white women are the only group of female voters who support Republican Party candidates for president. They have done so by a majority in all but 2 of the last 18 elections".