Iowa Poll Shows Volatility of Contest

A new Iowa NBC News/Marist poll shows that voters in that state have not settled on their choice for Republican presidential candidate and the race remains extremely volatile.

Five candidates received double digit support and a 16% of likely voters are still undecided about which Republican they will support.

Former Governor of Massachusetts Mitt Romney took the top spot with 23% of the vote, but Herman Cain is quickly closing the gap between them and had support from 20% of likely voters.

The state race has changed significantly since Minnesota Rep. Michele Bachmann won the Ames Iowa straw poll in August. She is tied for fourth with Rick Perry at 10% of the vote.

Only 41% of likely voters showed strong support of the candidate that they picked with, showing that the race can turn quickly when a candidate gains momentum.

Poll results of likely voters:

Mitt Romney- 23%
Herman Cain- 20%
Ron Paul- 11%
Michele Bachmann- 10%
Rick Perry- 10%
Newt Gingrich- 4%
Rick Santorum- 3%
Gary Johnson- 1%
Jon Huntsman- 1%