Supporters of the measure gave an average of $42,687 to members voting 'yes' compared to just $13,586 to members voting no, or slightly over three times as much. Opposition groups gave $26,239 to 'no' voters and $20,549 to 'yes' voters.
Labor unions in support of the measure gave 12 times as much on average to House members voting 'yes' ($22,720) compared to members voting 'no' ($1,837).
Includes reported contributions to congressional campaigns of House members in office on day of vote, from interest groups invested in the vote according to MAPLight.org, June 4, 2008 – June 3, 2010. Contributions data source: OpenSecrets.org.