2011-08-10 08:33:17 UTC
Obama 2008: http://www.opensecrets.org/pres08/contrib.php?cycle=2008&cid=N00009638
Romney 2008: http://www.opensecrets.org/pres08/contrib.php?cycle=2008&cid=n00000286
McCain 2008: http://www.opensecrets.org/pres08/contrib.php?cycle=2008&cid=N00006424
Obama 2012: http://www.opensecrets.org/pres12/contrib.php?cycle=2012&id=N00009638
Romney 2012: http://www.opensecrets.org/pres12/contrib.php?cycle=2012&id=N00000286