Donald Trump backed by 31% in Iowa, while Ted Cruz backed by 29% less than a week before the state's Republicans convene for presidential caucuses on the night of Feb. 1, a Quinnipiac University poll shows. NOTE: Results virtually unchanged from Jan. 11 Quinnipiac survey Marco Rubio has 13%; no other contender for GOP nomination with more than 7% Only 2% of likely caucus-goers declared themselves undecided; 39% of those who named a candidate said they may change their mind Cruz leads Trump among
Source: Bloomberg Politics