Outside groups have spent $11 million in advertisements attacking Donald Trump in the March 15 primary states of Florida and Illinois, according to ad-spending data from SMG Delta.
In Florida, the groups American Future Fund, Club for Growth and Our Principles PAC have spent a combined $4.2 million against Trump -- in addition to the estimated $4.3 million that Marco Rubio's Super PAC, Conservative Solutions PAC, has aired versus Trump.
By contrast, Trump's campaign has fired back by spending $1.5 million in Florida.
In Illinois, American Future Fund, Club for Growth and Our Principles PAC have spent $2.5 million against the GOP frontrunner.
On the Democratic side, Hillary Clinton is outspending Bernie Sanders in the March 15 states of Florida and Illinois, while Sanders is outspending Clinton in Missouri, North Carolina and Ohio.
Florida
Team Rubio: $6.7 million (about $4.3 million of which has been in anti-Trump ads)
Anti-Trump: $4.2 million (American Future Fund, Club for Growth, Our Principles PAC). That doesn’t include the $4.3 million from Rubio Super PAC
Team Trump: $1.5 million
Team Clinton: $100,000
Team Sanders: $45,000
Illinois
Anti-Trump: $2.5 million (American Future Fund, Club for Growth, Our Principles PAC)
Team Rubio: $1.1 million
Team Cruz: $250,000
Team Clinton: $1 million
Team Sanders: $817,000
Missouri
Team Rubio: $384,000
Team Cruz: $14,000
Team Sanders: $606,000
Team Clinton: $530,000
North Carolina
Team Cruz: $620,000
Team Sanders: $214,000
Team Clinton: $81,000
Ohio
Team Kasich: $1.5 million
Team Trump: $800,000
Team Sanders: $1.2 million
Team Clinton: $1.1 million
SOURCE: SMG Delta
