January 30, 2016
The final pre-caucus Iowa poll released tonight showed Donald Trump with a 28% to 23% lead over Ted Cruz, with Marco Rubio at 15%. This is a 6 point improvement for Trump over the prior poll in mid-January, turning a 3 point deficit into the 5 point lead.
On the Democratic side, Hillary Clinton leads Bernie Sanders by 45% to 42%. Both Clinton and Sanders made small gains over the last poll, with the net margin not changing much.
The poll is conducted by Selzer & Company, the best pollster in politics, and sponsored by the Des Moines Register.