Former Pennsylvania Senator Rick Santorum has launched his second bid for the Republican presidential nomination. Santorum was the runner-up in the 2012 nomination race, after winning the support of evangelical Christians. Santorum announced his bid in Pennsylvania at Penn United Technologies — a company which makes equipment for the oil and gas industries.

Rick Santorum: “Working families don’t need another president tied to big government or big money. And today is the day — today is the day we are going to begin to fight back. I am proud to stand here among you and for you, the American workers, who have sacrificed so much, to announce that I am running for president of the United States.”

The Republican presidential field is set to get even more crowded today as former three-term New York Governor George Pataki is expected to announce his bid.