USA Today/Suffolk Oct 11, 14 - Oct 14, 14
  • Sample Size: 500  
  • Joni Ernst +4 47%
  • Bruce Braley 43%
Quinnipiac Oct 08, 14 - Oct 13, 14
  • Sample Size: 967  
  • Joni Ernst +2 47%
  • Bruce Braley 45%
Rasmussen Reports Oct 08, 14 - Oct 10, 14
  • Sample Size: 957  
  • Joni Ernst +3 48%
  • Bruce Braley 45%
Des Moines Register Oct 03, 14 - Oct 08, 14
  • Sample Size: 1000  
  • Joni Ernst +1 47%
  • Bruce Braley 46%
Loras College Sep 01, 14 - Oct 03, 14
  • Sample Size: 600  
  • Joni Ernst 42%
  • Bruce Braley 42%
CBS News/NYT/YouGov Sep 20, 14 - Oct 01, 14
  • Sample Size: 2359  
  • Bruce Braley +1 44%
  • Joni Ernst 43%
NBC News/Marist Sep 27, 14 - Oct 01, 14
  • Sample Size: 778  
  • Joni Ernst +2 46%
  • Bruce Braley 44%
PPP (D) Sep 25, 14 - Sep 28, 14
  • Sample Size: 1192  
  • Joni Ernst +2 45%
  • Bruce Braley 43%
Des Moines Register Sep 21, 14 - Sep 24, 14
  • Sample Size: 546  
  • Joni Ernst +6 44%
  • Bruce Braley 38%
Rasmussen Reports Sep 17, 14 - Sep 18, 14
  • Sample Size: 750  
  • Joni Ernst 43%
  • Bruce Braley 43%
Quinnipiac Sep 10, 14 - Sep 15, 14
  • Sample Size: 1167  
  • Joni Ernst +6 50%
  • Bruce Braley 44%
CNN/Opinion Research Sep 08, 14 - Sep 10, 14
  • Sample Size: 608  
  • Bruce Braley +1 49%
  • Joni Ernst 48%
Loras College Sep 02, 14 - Sep 05, 14
  • Sample Size: 1200  
  • Bruce Braley +4 45%
  • Joni Ernst 41%
CBS News/NYT/YouGov Aug 18, 14 - Sep 02, 14
  • Sample Size: 1746  
  • Bruce Braley +2 44%
  • Joni Ernst 42%
PPP (D) Aug 22, 14 - Aug 24, 14
  • Sample Size: 915  
  • Joni Ernst 42%
  • Bruce Braley 42%
CBS News/NYT/YouGov Jul 05, 14 - Jul 24, 14
  • Joni Ernst +1 48%
  • Bruce Braley 47%
NBC News/Marist Jul 07, 14 - Jul 13, 14
  • Sample Size: 1599  
  • Joni Ernst 43%
  • Bruce Braley 43%
Quinnipiac Jun 12, 14 - Jun 16, 14
  • Sample Size: 1277  
  • Bruce Braley +4 44%
  • Joni Ernst 40%
Loras College Jun 04, 14 - Jun 05, 14
  • Sample Size: 600  
  • Joni Ernst +6 48%
  • Bruce Braley 42%
Rasmussen Reports Jun 04, 14 - Jun 05, 14
  • Sample Size: 750  
  • Joni Ernst +1 45%
  • Bruce Braley 44%
PPP (D) May 15, 14 - May 19, 14
  • Sample Size: 913  
  • Bruce Braley +6 45%
  • Joni Ernst 39%
CEA/Hickman Analytics (D) Apr 24, 14 - Apr 30, 14
  • Sample Size: 500  
  • Bruce Braley +4 44%
  • Joni Ernst 40%
Suffolk Apr 03, 14 - Apr 08, 14
  • Sample Size: 800  
  • Bruce Braley +8 38%
  • Joni Ernst 30%