A Los Angeles Times/Bloomberg poll released on June 24 shows these results when four candidates are listed: Obama 48%, McCain 33%, Nader 4%, Barr 3%, other 2%, don’t know 10%. Here are the details. Scroll down to the 3rd chart to find these numbers. Thanks to Tim Brace for this news.
One problem with the poll: the text of the question that asked about Barr and Nader identified Nader as the Green Party candidate. Which, of course, he isn’t.