With 96% of the vote counted in Mississippi, Santorum had 33%. Newt Gingrich was at 31%, Romney at 30% and Ron Paul at 4%.
In Alabama, with 79% of the vote counted, Santorum led with 35%, followed by Gingrich at 30%, Romney at 28% and Paul at 5%.
More here: CNN: Santorum to win Alabama, Mississippi - CNN.com