LITTLE ROCK, Ark. (AP) - Republican Tom Cotton is widening his fundraising lead in the race for a south Arkansas congressional seat and has more than twice as much money in the bank than his two GOP rivals combined.

Cotton reported in fundraising documents filed over the weekend that he raised $352,504 during the first three months of the year. Cotton reported that he had $638,223 cash on hand.

Cotton is one of three Republicans seeking outgoing Democratic Rep. Mike Ross' 4th district seat. Republican Beth Anne Rankin raised $127,236 and has $234,818 in the bank, while Republican John Cowart raised $22,984 and had $9,932 in the bank.

Democratic candidate Q. Byrum Hurst reported raising $102,489 and $95,310 cash on hand. Reports were not available for Democrats D.C. Morrison and Gene Jeffress.

(Copyright 2012 The Associated Press. All rights reserved.)