After the Iowa Republican Assembly showed how former Pennsylvania Sen. Rick Santorum fared on the presidential race, the once aspiring U.S. presidentiable finally quits the race and throws his support to Florida Sen. Marco Rubio. On Monday's Iowa assembly, Santorum placed last among the presidential hopefuls, garnering only one percent of the total votes, CBS News reports.

In January, Santorum ditched Fox News' prime time debate. Instead, he attended a fundraising event hosted by Donald trump. Santorum's presidential bid is said to be quite the battle after realizing that the last he ever served public office was in 2012.

As for him endorsing Rubio, he said on Fox News as quoted by CBS News, "He's a tremendously gifted young man, and he's a leader, he's a born leader. He is the new generation and someone that can bring this country together, not just moderates and conservatives, but young and old."

In 2012, according to CNN, Santorum was able to clinch the Iowa assembly, landing second in the most number of delegates. However, his eventual failure to retain that momentum led to him quitting the race. With his declining stats, he said that his family is with him when he said that the only possible way now for him to achieve his campaign's goal is to renounce his bid.

Despite Santorum quitting the race, he has not let go of his advocacies and his "socially conservative views." Instead, he allotted more time on addressing his plans such as reviving the American manufacturing that fits perfectly with his ideas on foreign policies.

On his Twitter account, Santorum also confirmed his withdrawal from the race, saying, "So thankful & grateful for your support. Just not our year. So today please join me in supporting @marcorubio".

Previously, Marco Rubio was asked by CNN's Dana Bash on what he felt about Santorum's endorsement wherein he said that he hasn't spoken to the Pennsylvania senator. He also added "I think he's fantastic."

Rick Santorum's Twitter announcement was later acknowledged by Rubio. The Florida senator re-tweeted the message with an accompanying reply, "I have tremendous admiration and respect for @RickSantorum, and I am excited to have him on our team."

On Tuesday, Santorum held a press conference at Gettysburg, Pennsylvania, where he said as per another CBS News report, "We made a decision over the weekend that while this presidential race for us is over for me, and we will suspend our campaign effective today, we are not done fighting."