Reporting from Manchester, N.H. — The 2012 Iowa caucuses may produce the narrowest margin of victory in history for the Republican contest there, with Mitt Romney and Rick Santorum vying for the top spot in the first nominating event of the presidential election.
With 92% of precincts reporting as of 10:21 p.m. Central Time, Romney and Santorum were separated by just 13 votes, each just under 25% of the total vote.
The closest GOP contest in the history of Iowa's leadoff contest was 1980, when George H. W. Bush edged Ronald Reagan 31.6%-29.5%.
LIVE COVERAGE: Iowa GOP caucuses
In 1996, Bob Dole won by 3 percentage points over Pat Buchanan, according to results provided by the Des Moines Register.