Mason-Dixon Polling Group
6/4/12-6/6/12; 625 likely voters, 4% margin of error
Mode: Live telephone interviews
KVLY release

North Dakota

2012 Senate
47% Heitkamp (D), 46% Berg (R) (more polls)
46% Heitkamp (D), 38% Sand (R) (more polls)

2012 Senate Republican Primary
73% Berg, 16% Sand (more polls)

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