During on an appearance on Wednesday's edition of Fox News' "On the Record with Greta Van Susteren," Rick Santorum announced he has suspended his presidential campaign and endorsed Sen Marco Rubio. Santorum described Rubio as a "born leader" and praised his "optimistic" message.
Santorum entered the race in May, but was unable to gain any traction. He finished second to last at 11th place with one percent of the vote. He also has less than 1 percent support nationally, according to the Real Clear Politics average of polls.
In 2012, the former Pennsylvania senator won the Iowa caucuses and 10 other states before Mitt Romney clinched the GOP nomination. Santorum is the third Republican to drop out of the race since Monday's Iowa caucuses joining Sen. Rand Paul and former Gov. Mike Huckabee.