Page last updated at 15:02 GMT, Friday, 16 May 2008 16:02 UK
US Election polltracker
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This data was collated by independent polling resource website Full data from these and other
polls, including detailed methodology and margin of error adjustments, can be found on the dedicated pages
2008 National Democratic Presidential Primary and 2008 National Republican Presidential Primary.

The BBC is not responsible for the content of external websites.

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