Poll Watch: NBC News/Marist Iowa 2014 Senatorial Survey

NBC News/Marist Iowa 2014 Senate Poll 

• Joni Ernst (R) 43%
• Bruce Braley (D) 43%
• Other 1%
• Undecided 14%
  

Favorable / Unfavorable {Net}

• Joni Ernst 38% / 33% {+5%}
• Bruce Braley 36% / 32% {+4%}

Survey of 1,599 registered voters was conducted July 7-13, 2014.  The margin of error is +/- 2.5 percentage points.