KEY POINTS
  • Billionaire Sheldon Adelson is giving $30 million to a super PAC pushing to protect the House GOP majority.
  • The casino magnate is open to giving more to Republican midterm efforts this year.
Sheldon Adelson, chairman and chief executive officer of Las Vegas Sands Corp.

Billionaire casino magnate Sheldon Adelson has given $30 million to a super PAC pushing to protect the House majority, and is leaving the door open to putting millions more toward the Republican midterm effort this year, a source with direct knowledge told CNBC.

The cash influx to the GOP-linked Congressional Leadership Fund gives Republicans a massive boost in resources as they try to fight off Democrats set on flipping the House in November. Democrats, emboldened by party enthusiasm and opposition to congressional GOP policies, aim to flip 23 GOP-held seats to take a House majority.