As campaigns launch, CNN/ORC poll finds GOP field stays tight

With the ranks of declared 2016 presidential candidates growing, a new CNN/ORC poll finds the contests for the Democratic and Republican presidential nominations solidifying around two key points: Hillary Clinton dominates everyone on the Democratic side, while no one has broken out of the pack on the Republican side.

The recent formal entries into the Republican race by Marco Rubio, Rand Paul and Ted Cruz have stirred up the GOP field somewhat, but still, no clear leader has emerged. The new poll finds Jeb Bush has held on to the top spot among Republicans and Republican-leaning independents, but Bush's edge is slight and there are multiple contenders for the nomination who could overtake him with just a small increase in support at the same time that some previously strong contenders have faded.