Rep. Ron Paul won the most support for the 2012 Republican presidential nomination in an unofficial straw poll of conservative activists attending an annual conference.

A libertarian from Texas who has railed against spending and the Federal Reserve, Paul won the Saturday contest at the Conservative Political Action Conference with 31 percent backing.

This straw poll does not mean much, but Paul’s success does raise a crucial question for Republicans: are they going to lean conservative or libertarian?

Another libertarian the Republicans might nominate in 2012 is Gary Johnson, the former governor of New Mexico.  You can read about him here and here.  Full disclosure: I have been working with Johnson on his economic program.

Conservative commentary these days is fixated on U.S. fiscal imbalance and holds that we should address the imbalance with spending cuts, not tax increases.

Missing from most such commentary, however, is specifics about what expenditure to cut (see, e.g., Daniel Henninger’s recent WSJ piece).

Conservatives recognize that addressing the debt in a serious way means cutting national defense, Social Security, and Medicare.  But conservatives support high spending on national defense, and they are unwilling, for reasons of political expendiency, to propose reductions in entitlements.

Libertarians also believe we must slash expenditure, but they are happy to name specific cuts.  Libertarians advocate U.S. withdrawal from Iraq and Afghanistan, which would save hundreds of billions of dollars per year, and they endorse major cuts or elimination of Social Security and  Medicare.

The public thus perceives the conservative position as disingenuous, the libertarian position as unelectable.  Take your pick.