In each of his three years in the Senate, Obama has voted with the majority of Democrats at least 96 percent of the time

Obama voted against the confirmation of John Roberts for the Supreme Court

He also cast a vote against Samuel Alito

Obama opposed a bill in 2006 that would have denied citizenship or other legal status to illegal immigrants, and voted last year against a measure that would have allowed police to question people about their immigration status under certain circumstance

He voted in favor of the immigration reform bill sponsored by John McCain and Ted Kennedy

The Illinois Senator voted against a 2006 bill to prohibit the transportation of a minor girl across state lines to get an abortion

In June 2006, Obama voted against a bill that would have required President Bush to withdraw most U.S. troops from Iraq by July 1, 2007. But this past September, he joined 27 other Democrats in voting for a bill ordering Bush to begin withdrawing most American forces within 90 days