Christie on Tuesday endorsed former Massachusetts Gov. Mitt Romney for president, but all of the interviews that comprise the surveys were conducted before the endorsement. The Quinnipiac poll was conducted Oct. 5-10, surveying 1,186 registered voters. The margin of error is +/- 2.9 percent. The Monmouth poll was conducted Oct. 5-9, surveying 817 adults in the state. The margin of error is +/- 3.4 percent.