Mitt Romney remains the front-runner to win the Republican presidential nomination and is viewed as the most electable candidate, yet he has failed to break away from his GOP rivals, a new poll finds.

According to the Washington Post/ABC News poll, 33 percent of Republican and GOP-leaning independents surveyed said Romney had "the best chance to beat Obama." Businessman Herman Cain followed at 21 percent, ahead of Texas Gov. Rick Perry with 11 percent.

Yet despite his edge in perceived electability, Romney has failed to gain momentum and pull away from a GOP field that has seen rival candidates stumble over the last month.

Twenty-four percent of Republicans want Romney to win the nomination. A nearly identical amount —25 percent said the same thing of the former Massachusetts governor when voters were last surveyed by ABC News and The Washington Post in October. In September, Romney was also polling at 25 percent.

With 23 percent, Cain is just behind Romney. The poll comes as Cain continues to battle allegations he sexually harassed several women while he was president of the National Restaurant Association in the 1990s. On Sunday, Cain refused to answer further questions about the allegations, which his campaign has continued to deny.

Rick Perry has the support of 13 percent of voters, which falls in line with other recent polls. Newt Gingrich placed fourth in the poll, with 12 percent. No other candidate was able to win double digits in the poll.

The poll was conducted between Oct. 31 and Nov. 3 and had a margin of error of plus or minus 3.5 percentage points and a margin of error of 5.5 percentage points when it surveyed just Republicans. The report of the sexual harassment allegations against Cain was published on Oct. 31.