Both Kerry and Edwards lead Bush by double figures among likely voters:
"Democrat John Kerry holds his largest lead yet over President Bush in a head-to-head match-up among likely voters, a new USA TODAY/CNN/Gallup poll concludes, and rival John Edwards also holds a double-digit lead over the president.
The poll, taken Feb. 16-17, indicates that if the election were held today, Kerry would be chosen by 55% of likely voters, compared to 43% for Bush. In the last polling, Feb. 6-8, Bush held a 49-48 advantage.
Edwards, Kerry's sole remaining major rival for the Democratic nomination, holds a 54%-44% advantage, the poll indicates. The question has a margin of error of plus or minus 3 percentage points."
http://www.usatoday.com/news/polls/tables/live/200
4-02-18-poll.htm