The Alabama primary is taking place on Tuesday as voters head to the polls in the Yellowhammer State.
Alabama has 50 delegates, 47 of which are bound by the results of the contest. Mississippi is holding its primary election the same day, along with the Hawaii Caucus.
HuffPost's Mark Blumenthal reports:
Tuesday's Republican primaries in Alabama and Mississippi may be the most suspenseful so far, because the few public polls available have produced inconsistent results that collectively point to close finishes in both states.
In Alabama, three late polls show Mitt Romney, Newt Gingrich and Rick Santorum running in a three-way dead heat.
From delegates to endorsements, click here for a rundown on who's ahead in the race for the Republican presidential nomination.
Below, a live blog of the latest developments to unfold.