So basically read all the posts, nobody answered the question except some lame anti-gay bigot which personally, I think is overblown.
The reason Santorum deserves more attention than Gingrich, Paul, or Bachmann is that he has personal charisma, his ideas are realistic, and he is actually a moderate who has demonstrated his ability to reach a concenus with the Democrats. Those 3 statements do not apply to the other 3.
Also Gingrich is a squinty-eyed Georgia hillbilly. He probably has moonshiners and KKK in his family.
I think you got your answers. In summary:
1. He's been so far back polls.
When you're back in the polls no one is taking shots at you. If you watch debates you'll see that the candidates getting more air time are doing so because the rules allow you respond to an attack. You keep getting attacked, you keep getting to respond.
Newspapers and the like focus on the 'flavor of the day'. It's what sells.
Santorum and others back in the polls are frequently on cable news programs. In some cases moreso than candidates doing in polls. You just have to watch.
2. The 'has been' politician thingy. He couldn't even keep his Senate seat in his home state of PA. It's difficult seeing someone as the nominee if they don't even have a base of support in their own state.
3. He's made a career focusing on social issues. IMO, the is the biggest reason he's not very relevant. This election is primarily about the economy and jobs, yet he still sticks with the social conservative angle. This was vividly evident in early debates where he was always trying to switch the subject from the economy of foreign policy issues back to 'family issues' and the like. People aren't buying what he's selling. Since his favorite issues are not in the fore, he's the wrong candidates for this time. He may do OK in a strong evangelical Christian place like IA, But I don't see his message/focus getting a lot traction elsewhere. I'd say many others don't either and that's why he hasn't raised a lot campaign money. The lack of which will also mean less (paid for) airtime/commercials.
4. I'm not feeling the charisma thing either.
Fern