Obama vs. McCain: 49-44
McCain vs. Clinton: 48-45
Favorables:
Obama: 56% favorable - 39% unfavorable
McCain: 53% favorable - 40% unfavorable
Clinton: 44% favorable - 54% unfavorable
This Washington Post-ABC News poll was conducted by telephone April 10-13, 2008, among a random national sample of 1,197 adults. The overall results have a margin of sampling error of plus or minus three percentage points. Error margins are higher for subgroups. Sampling, data collection and tabulation by TNS of Horsham, Pa.
http://www.washingtonpost.com/wp-srv/politics/documents/postpoll_041408.html