The two news organizations reported Monday that a majority of Americans think Obama will be defeated by the Republican candidate, leading the president to declare himself "the underdog" in an interview with ABC News Monday. The ABC News/Washington Post poll was conducted Sept. 29-Oct. 2, surveying 1,002 adults, for a margin of error of +/- 3.1 percent. There were 869 registered voters, for a margin of error of +/- 3.3 percent. The total sample size of Republicans and Republican-leaning independents was 397, for a margin of error of +/- 4.9 percent. Of those, 350 were registered to vote; the margin of error for the GOP primary matchups is +/- 5.2 percent.