Read the full CNN/Opinion Research poll

According to this survey, both of the Democratic front-runners, Sens. Hillary Clinton and Barack Obama hold mostly double-digit — and statistically identical — leads over Republican presidential candidates Mitt Romney, Rudy Giuliani and Mike Huckabee, drawing greater than 50 percent support in each hypothetical matchup. The strongest GOP contender would be John McCain who is statistically tied with both. There was particularly bad news for Romney as 62 percent of those surveyed say they would definitely not vote for him in November. Similarly, 55 percent said they wouldn’t vote for Giuliani and 52 percent said they wouldn;t vote for Huckabee.The survey was conducted Jan. 9-10 and has a 3.5 percent margin of error.