[mnehring]

Tom Tancredo for one.
http://www.kwgn.com/videobeta/4ea74acd-546b-4a49-8346-d2db5d1713c7/News/Tancredo-endorsed-Santorum-for-GOP-candidateNews/Tancredo-endorsed-Santorum-for-GOP-candidateNews/Tancredo-endorsed-Santorum-for-GOP-candidate

..also Gary Bauer.
http://www.christianpost.com/news/social-conservative-leader-gary-bauer-endorses-rick-santorum-66668/

..and Sharron Angle.
http://www.lasvegassun.com/news/2012/feb/04/sharron-angle-finds-her-endorsement-packs-little-p/

..and David Limbaugh, and the Evangelical Conference... et al...
https://www.google.com/search?hl=en&gl=us&tbm=nws&btnmeta_news_search=1&q=%22Endorsed+Santorum%22

[mitchell001]

Have any former Senate collegues endorsed him?

[Jim Noble]

Tom Tancredo, Gary Bauer, and Sharron Angle.

Great. Just great.

Maybe Duncan Hunter and Christine O'Donnell can get on board, too.