(CNN) - The latest poll assessing the impact of allegations of sexual misconduct on Herman Cain's GOP presidential campaign shows that a plurality of Americans think the claims are true.
39% of those polled who have heard a lot about the allegations said they thought the claims were true, according to the Pew Research Center poll. Twenty-four percent said the claims were false and 36% said they didn't know.
The poll, which was done before a Monday news conference in which a woman alleged that Cain had groped her in a parked car, showed a majority of respondents were familiar with the allegations against Cain. 51% said they had heard a lot about the accusations, while 24% said they had heard a little and 23% said they had heard nothing at all.
When separated by party affiliation, the numbers diverged on whether people thought the allegations were true.
51% of those polled who were Democrats or leaned toward Democrats said they thought the claims were true, while 29% of Republicans said they thought the accusations were true.
When asked to characterize the media coverage of Cain, 39% of Republicans and 51% of Democrats said the news media had been fair.
Among the sexes, there weren't significant differences of opinion on the validity of the allegations against Cain. 40% of women and 38% of men said they thought the claims were true.
The poll was taken by telephone November 3-6 among 1,005 adults. The sampling error was plus or minus 4 percentage points.