The results of the latest Des Moines Register/Bloomberg Iowa Poll underscore Clinton's dominance a year ahead of Iowa's first-in-the-nation caucuses and the inability so far of any other potential candidate to crack her aura of inevitability.
Clinton, the former U.S. secretary of state and a fixture in national Democratic politics for more than 20 years, is the first choice for 56 percent of poll respondents. That's 40 points ahead of the next potential contender, liberal populist Sen. Elizabeth Warren of Massachusetts, who is the top choice for 16 percent.
Whoever ultimately gets into the race will look to make themselves the most credible choice alongside Clinton, said Iowa-based Democratic strategist Jeff Link.
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