The polls showed three primary bases of support for Mrs. Clinton: women, Hispanics and older voters.
A spokesman for the Muslim Brotherhood, the Islamist party that forms the primary base of Mr. Morsi's support, said on Monday that they believed a sufficient numbers of judges had agreed to supervise the polls, ensuring that the vote could go forward.
The senator was trounced by his former rival by 20 points in the Florida primary, and needs Trump's base of support to be re-elected in his home state next month.
Kentucky Sen. Rand Paul, whose father, Ron Paul, placed second here in the 2012 primary, also has a strong base of support.
Hill, who won the 2010 GOP primary based on Tea Party support, faces reelection in 2014.
It remains plausible that the G.O.P. nominee in 2016 could rely on religious conservatives as a major base of support in the primaries while also appealing to other groups within the party — a model that worked successfully for George W. Bush in 2000.
And from the moment Mr. Bush won re-election in 1998, he drew on his fellow governors as a mainstay of his candidacy and as his base of support in the Republican primaries.
The problem for Trump in the general election has been that he hasn't figured out how to expand the base of support he enjoyed in the primary.
Some Democrats who have advised his campaign quietly complained that he was undercutting his own message and risked alienating war critics who formed his initial base of support, especially after tapping his primary rival, Senator Hillary Rodham Clinton, for secretary of state.
The 2002 Florida Democratic gubernatorial primary pitted an experienced woman with a strong and passionate base of support and a national reputation against an audacious, younger upstart making his first run for office.
While he developed a loyal following among college students and libertarian activists, Paul was never able to expand his base of support enough to register in Republican primaries.
