Rick Santorum set to hit the campaign trail for Mitt Romney

Greensburg - Former Pennsylvania Senator and 2012 presidential candidate Rick Santorum is set to hit the campaign trail for his former Republican rival and presumptive GOP nominee Mitt Romney. He will appear at the opening of Romney's office in Pennsylvania.

Former Massachusetts Governor and presumptive Republican nominee Mitt Romney announced that his campaign will open up its campaign office Saturday in Greensburg, Pennsylvania. It’s inviting everyone, including a former rival. Sources close to former Pennsylvania Senator Rick Santorum tell ABC News that he will be appearing at the Romney Victory Office in Greensburg, which is familiar turf for the former presidential candidate, who represented southwest Pennsylvania. It is reported that both Romney and the Republican Party officials had requested Santorum to attend the grand opening, in which the ex-competitor obliged and “was happy to accept the request.” In May, Santorum endorsed Romney for the presidency because “we both agree that President Obama must be defeated.” Since then, Santorum has launched an independent group called Patriot Voices, a group that promotes conservative issues, some of which were key components of his failed presidential bid. The organization has also been endorsing and supporting candidates across the country for the November general election. It sends out issue alerts and fundraising emails to supporters, just like he did on the campaign trail. During a speech in Tiffin, Iowa in front of 150 people, Santorum called the president “a dangerous man.” “Having a president who routinely runs roughshod over the courts, the Congress and the American public with what he wants to do is a dangerous man who has proven he is not capable of leading this country effectively,” stated Santorum, reports the Capitol Column. “I am ever more energized to make sure we elect congressmen and senators to keep the majority in the House and win back the Senate, but we absolutely must defeat Barack Obama.”