Bases of support: Who's backing which candidate?

The Republican candidates are all vying for the votes of members of the Republican party in the upcoming state primaries and caucuses.

The Republican base is comprised of many disparate factions, like evangelical Christian social conservatives, centrists, and members of the Tea Party movement. To what extent are the major factions likely to support each candidate?

The BBC has asked five political pundits to assess the strength of each candidate among four major factions, from zero to five stars.

The pundits:

• Larry Sabato is the director of the University of Virginia <link> <caption>Center for Politics</caption> <url href="http://www.centerforpolitics.org/crystalball/" platform="highweb"/> </link>

• Rhodes Cook is a political analyst and author of the <link> <caption>Rhodes Cook Letter</caption> <url href="http://rhodescook.com/" platform="highweb"/> </link>

• Carl Cannon is Washington editor of <link> <caption>RealClearPolitics</caption> <url href="http://www.realclearpolitics.com/" platform="highweb"/> </link>

• David Yepsen is the director of the <link> <caption>Paul Simon Public Policy Institute</caption> <url href="http://paulsimoninstitute.org" platform="highweb"/> </link> at Southern Illinois University

• <link> <caption>Dante Scala</caption> <url href="http://www.carseyinstitute.unh.edu/about/staff-fellows/Scala.html" platform="highweb"/> </link> is an associate professor of political science at the University of New Hampshire

The candidates: