He is now the eighth candidate supported by the National Republican Senatorial Committee to be defeated this year.
Cornyn was Chairman of the National Republican Senatorial Committee from 2007-2011.
For nearly a decade, the National Republican Senatorial Committee was one of Washington's premier political success stories.
The advertisements, which ran in the spring, were paid for by the National Republican Senatorial Committee.
Before that he served for two years as executive director of the National Republican Senatorial Committee.
The National Republican Senatorial Committee raised about $28 million and had roughly $9 million on hand.
The goal of today's event, sponsored by the National Republican Senatorial Committee, is to raise $6 million.
It was reorganized in 1948, and renamed the National Republican Senatorial Committee.
The National Republican Senatorial Committee has raised about $1 million in soft money.
"This fund-raising gimmick by the National Republican Senatorial Committee is a bad idea," he said in an interview.