Simon surged ahead in Iowa in October, and was, by December, the clear front-runner in that state. However, in February 1988, Simon narrowly lost the Iowa caucus to Representative Dick Gephardt of Missouri, and finished third in the New Hampshire primary the following week, with weak showings in Minnesota and South Dakota a week later. Out of money and momentum, Simon largely skipped the key Southern "Super Tuesday" primaries on March 8, concentrating on his home state a week later, where key local Democrats were running as Simon delegates on the delegate selection ballot, and wanted to attend the Democratic National Convention regardless of Simon's slim chance of winning the nomination. Simon won the Illinois primary, and decided to make a final effort in the Wisconsin Primary in early April, but dropped out after he finished behind Governor of Massachusetts Michael Dukakis, Reverend Jesse Jackson, and Tennessee Senator Albert Gore. Simon endorsed Dukakis, who won the Democratic nomination in July, with Jackson the last active challenger.