[cnn-photo-caption image= http://i2.cdn.turner.com/cnn/2010/images/01/05/art.greer.rpof.jpg caption="Jim Greer (left), the embattled chairman of the Republican Party of Florida, will resign Tuesday."](CNN) - Jim Greer, the embattled chairman of the Republican Party of Florida, will resign Tuesday, two sources close to the party confirm to CNN.
Greer will discuss his decision with members of the Republican State Executive Committee around noon, and will hold a conference call with reporters at 1 p.m. ET.
The longtime ally of Gov. Charlie Crist has been under fire for his management of party money and his involvement in contested primaries. Critics of the chairman - including backers of Marco Rubio, Crist's conservative rival for the GOP Senate nomination - have been demanding his ouster for months. Greer was appointed by Crist in 2007.
Greer was also one of Michael Steele's top allies during last year's tumultuous race for the Republican National Committee chairmanship.