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Iowa: Election 1998 (U.S. Senate)

Election Matchup
Democratic Primary
Republican Primary
Candidate Favorability Ratings
Dave Nagle DUI Fallout

Election Matchup

Charles Grassley (R) vs. David Osterberg (D)

Poll	Date	Grassley	Osterberg	No opinion	Sample	MoE
Iowa Poll¹	October 28-30, 1998	72%	23%	5%	800 LV	± 3.5
Mason-Dixon	October 25-27, 1998	68%	24%	8%	803 LV	± 3.5
Mason-Dixon	October 11-13, 1998	67%	22%	11%	809 LV	± 3.5
Mason-Dixon	September 12-14, 1998	69%	19%	12%	804 LV	± 3.5
Iowa Poll¹	September 7-10, 1998	65%	21%	14%	800 LV	± 3.5
Mason-Dixon	July 18-21, 1998	68%	17%	15%	834 LV	± 3.5
Iowa Poll¹	June 20-24, 1998	72%	18%	10%	581 LV	± 4.0
Mason-Dixon	March 6-8, 1998	61%	16%	23%	823 RV	± 3.5

1 "In the race for U.S. Senate, if the election for held today and the candidates were David Osterberg for the Democrats and Charles Grassley for the Republicans, for whom would you vote?" The Iowa Poll is sponsored by the Des Moines Register.

Charles Grassley (R) vs. Dave Nagle (D)

Poll	Date	Grassley	Nagle	No opinion	Sample	MoE
Mason-Dixon	December 7-9, 1997	58%	24%	18%	802 RV	± 3.5
Mason-Dixon	July 26-28, 1997	53%	26%	21%	821 RV	± 3.5
Mason-Dixon	February 16-18, 1997	50%	33%	17%	810 LV	± 3.5

Charles Grassley (R) vs. Chet Culver (D)

Poll	Date	Grassley	Culver	No opinion	Sample	MoE
Mason-Dixon	July 26-28, 1997	55%	20%	25%	821 RV	± 3.5

Charles Grassley (R) vs. Steve Rapp (D)

Poll	Date	Grassley	Rapp	No opinion	Sample	MoE
Mason-Dixon	February 16-18, 1997	50%	19%	31%	810 LV	± 3.5

Charles Grassley (R) vs. Leonard Boswell (D)

Poll	Date	Grassley	Boswell	No opinion	Sample	MoE
Mason-Dixon	February 16-18, 1997	51%	26%	23%	810 LV	± 3.5

Jim Lightfoot (R) vs. Dave Nagel (D)

Poll	Date	Lightfoot	Nagel	No opinion	Sample	MoE
Mason-Dixon	February 16-18, 1997	37%	41%	22%	810 LV	± 3.5

Democratic Primary

Democratic Primary Matchup

Poll	Date	Nagle	Boswell	Rapp	No opinion	Sample	MoE
Mason-Dixon¹	February 16-18, 1997	29%	21%	10%	40%	236 LV	± 7.0

1 Poll of likely Democratic primary voters.

Republican Primary

Republican Primary Matchup

Candidate	February 16-18, 2007
Jim Ross Lightfoot	44%
Jim Leach	23%
Greg Ganske	12%
Jim Nussle	6%
Tom Latham	5%
No opinion	10%
Poll	Mason-Dixon¹
Sample	236 LV
MoE	± 7.0

1 Poll of likely Republican primary voters.

Candidate Favorability Ratings

Charles Grassley Favorability Rating

Poll	Date	Favorable	Unfavorable	No opinion	Sample	MoE
Iowa Poll¹	October 28-30, 1998	79%	15%	6%	800 LV	± 3.5
Mason-Dixon	October 25-27, 1998	69%	14%	17%	803 LV	± 3.5
Mason-Dixon	October 11-13, 1998	66%	13%	21%	809 LV	± 3.5
Mason-Dixon	September 12-14, 1998	68%	10%	22%	804 LV	± 3.5
Iowa Poll¹	September 7-10, 1998	78%	12%	10%	800 LV	± 3.5
Mason-Dixon	July 18-21, 1998	67%	11%	22%	834 RV	± 3.5
Mason-Dixon	March 6-8, 1998	64%	9%	27%	823 RV	± 3.5
Mason-Dixon	December 7-9, 1997	61%	8%	31%	802 RV	± 3.5
Mason-Dixon	July 26-28, 1997	56%	13%	31%	821 RV	± 3.5

1 "I'm going to mention the names of candidates who have announced they are running for office in the state of Iowa. For each name I read, please tell me if you feelings toward the person are very favorable, somewhat favorable, somewhat unfavorable, or very unfavorable. If you don't know the person, just say so. ... U.S. Senator Charles Grassley." The Iowa Poll is sponsored by The Des Moines Register.

David Osterberg Favorability Rating

Poll	Date	Favorable	Unfavorable	No opinion	Sample	MoE
Iowa Poll¹	October 28-30, 1998	21%	15%	64%	800 LV	± 3.5
Mason-Dixon	October 25-27, 1998	20%	14%	66%	803 LV	± 3.5
Mason-Dixon	October 11-13, 1998	18%	10%	72%	809 LV	± 3.5
Mason-Dixon	September 12-14, 1998	13%	8%	79%	804 LV	± 3.5
Iowa Poll¹	September 7-10, 1998	13%	8%	79%	800 LV	± 3.5
Mason-Dixon	July 18-21, 1998	9%	5%	86%	834 RV	± 3.5
Mason-Dixon	March 6-8, 1998	7%	3%	90%	823 RV	± 3.5

1 "I'm going to mention the names of candidates who have announced they are running for office in the state of Iowa. For each name I read, please tell me if you feelings toward the person are very favorable, somewhat favorable, somewhat unfavorable, or very unfavorable. If you don't know the person, just say so. ... David Osterberg, the former state legislator and candidate for U.S. Senate." The Iowa Poll is sponsored by The Des Moines Register.

Dave Nagle Favorability Rating

Poll	Date	Favorable	Unfavorable	No opinion	Sample	MoE
Mason-Dixon	December 7-9, 1997	29%	9%	62%	802 RV	± 3.5
Mason-Dixon	July 26-28, 1997	25%	5%	70%	821 RV	± 3.5
Mason-Dixon	February 16-18, 1997	30%	15%	55%	810 LV	± 3.5

Chet Culver Favorability Rating

Poll	Date	Favorable	Unfavorable	No opinion	Sample	MoE
Mason-Dixon	July 26-28, 1997	9%	2%	89%	821 RV	± 3.5

Dave Nagle DUI Fallout

Effect of Dave Nagle's DUI On Vote

Poll	Date	More likely	Less likely	No effect	No opinion	Sample	MoE
Mason-Dixon	December 7-9, 1997	0%	38%	62%	0%	802 RV	± 3.5