Billionaire casino owner Sheldon Adelson and his wife, Miriam, gave a combined $5 million to the "YG Action Fund", a super PAC with ties to House Majority Leader Eric Cantor, R-Va., according to Federal Election Commission filings made Sunday night.

The contributions, dated April 30th but first revealed in the group's second quarter filings, dwarf the super PAC's fundraising to date; all other donations together come to just $394,150.

This is the second big donation to come from Miriam and Sheldon Adelson in the second quarter; filings made last week showed Sheldon Adelson gave $1 million to ...