Updated: Jim DeMint leaving Senate, will head Heritage

Sen. Jim DeMint is resigning from the U.S. Senate to succeed Ed Fuelner as head of the Heritage Foundation.

The South Carolina Republican is two years into his second term in the Senate and had previously said he would not seek a third term. Gov. Nikki Haley, R-SC, will name an interim appointee who is expected to serve two years. The seat will be open in 2014, the same year South Carolina’s other senator, Lindsay Graham, will seek re-election.