In The Righteous Mind, Jonathan Haidt argues libertarians value liberty, liberals (American) value “caring” and to a lesser degree liberty/oppression, and conservatives care/harm, liberty/oppression, fairness/cheating, loyalty/betrayal, authority/subversion, and sanctity/degradation fairly equally.
Conservatives sense the world is complex & proportionality leads to better solutions; indeed, conservatives are often more pragmatic. Despite his occasional (leftist) tics, he fits the more skeptical study of human nature we see in Franklin & Adams, Hamilton & Madison. Neither he nor the readers here would be surprised by a story which should make those who profess “caring” a bit uncomfortable: Unemployment Rate Dropped In Every State That Elected A Republican Gov. In 2010
Update: Arthur Brooks uses Haidt and makes an argument about who cares.