article_snippet.sent: Age differences hold across party lines, but the generation gap among Republicans and Republican-leaners is larger than that among Democrats and Democratic-leaning independents.
article_snippet.sent: The shift from the Pew Center results comes across demographic lines.
article_snippet.sent: The CNN/ORC International poll was conducted by telephone, April 16-19, among a random national sample of 1,018 adult Americans.
article_snippet.sent: Results for the full poll have a margin of sampling error of plus or minus 3 percentage points.
highlights_snippet.sent: Public opinion has shifted on the issue since last fall .
  