Marco Rubio: 'Today is that terrible day you pray never comes' - $3,303,355 reportedly accepted from NRA

Cory Gardner: 'I am heartbroken for the students... in this horrible tragedy' - $3,879,064

Rob Portman: 'Heartbreaking news out of Florida. Jane and I send our prayers' - $3,061,941

Bill Cassidy: 'Praying for the students, teachers and first responders' - $2,861,047

Thom Tillis: 'Tragic news out of Florida. Please keep the victims… in your thoughts and prayers' - $4,418,012

Ken Buck: 'Praying today for the students and all those impacted' - $800,544