This year, the Adelsons have broken the record for the largest sum any individual or family has spent on federal elections. The largest chunk, $50 million, went to the Congressional Leadership Fund, the biggest conservative group trying to help the GOP retain control of the House. The previous record was theirs, too: They dropped $92 million on GOP candidates and committees in 2012. Despite expressing initial reservations about Donald Trump’s 2016 campaign, the Adelsons wound up contributing $20 million toward the main super PAC supporting his presidential bid.
Source : http://www.latimes.com/politics/la-na-pol-midterm-election-billionaires-20181105-story.html