Santorum is a right wing religious extremist.
He is a divisive candidate, and unpopular candidate, within the Republican Party -- he is a clown act and little more.
US elections are usually 2 ring circuses with a lot of clowns
I like Rand Paul and Bernie Sanders because they are the odd men out -- they may shape their respective party's platforms but neither seems very electable.
A 67 Hillary is too old. Reagan was 69 when elected and spent his second term dozing off at cabinet meetings ... I don't think someone over 55 -60 is electable. Merkle and Thatcher were both considerably younger when elected. Bernie Sanders is already in his 70's he may trade off for a cabinet appointment if the nominated Democrat is elected
Same with Rand Paul should the Republican nominee win the general election.