Washington (CNN) Hillary Clinton continues to be a dominant force heading into the 2016 presidential election, according to a new CNN/ORC poll. The former secretary of state maintains a broad lead over the field of potential Democratic challengers she could face in a nomination contest and sizable advantages over the leading contenders from the Republican side in general election match-ups.

Former Florida Gov. Jeb Bush tops the possible field for the Republican Party's nomination race, followed by Wisconsin Gov. Scott Walker, Kentucky Sen. Rand Paul, former Arkansas Gov. Mike Huckabee and former neurosurgeon Ben Carson all in a tight cluster.

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But none of the top candidates in this field gets within 10 points of Hillary Clinton in a series of hypothetical general election matchups.

Rand Paul comes closest, with 43% saying they'd be more likely to back him while 54% choose Clinton. The two candidates who currently top the GOP field, Bush and Walker, match up equally against Clinton, with each carrying 40% to her 55%. Huckabee gets 41% to Clinton's 55% and Carson has 40% to Clinton's 56%.