President Barack Obama is viewed more favorably than challenger Mitt Romney, who has struggled to improve his high unfavorable rating among voters. Both Joe Biden and Paul Ryan are among the least popular vice presidential candidates in recent history.
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About Pew Research Center Pew Research Center is a nonpartisan fact tank that informs the public about the issues, attitudes and trends shaping the world. It conducts public opinion polling, demographic research, media content analysis and other empirical social science research. Pew Research Center does not take policy positions. It is a subsidiary of The Pew Charitable Trusts.
