(CNN) - Hillary Clinton has slightly increased her lead in Pennsylvania, according to a new CNN analysis of recent polls ahead of the crucial April 22 primary.
In the latest "poll of polls," the New York senator holds a 6-point lead over Sen. Barack Obama in Pennsylvania, 49 percent to 43 percent. Eight percent of likely Democratic voters there remain unsure.
Clinton's margin over Obama is two points higher than it was in a poll of polls conducted late last week, though is still half of what it was two weeks ago.
Tuesday's poll of polls includes one survey conducted in part after Obama's controversial comments about some small-town Americans surfaced. Despite Clinton’s repeated criticism over the comments, a new Quinnipiac poll released Tuesday shows Obama's position has not changed from a similar poll conducted early last week.
Clinton holds a 6-point lead in the just-released Quinnipiac poll that was conducted April 9-13. Obama's comments first surfaced on April 11. The organization reports there was no noticeable difference in the results from the two days immediately following news of the comments.
The CNN poll of polls also includes recent surveys from Zogby and Time Magazine.