In 1993, Miller resigned from the House to create a policy nonprofit organization, and was succeeded by Charleta Tavares.

With Ben Espy being term limited in 2002, Miller sought to succeed him, and won the 15th District.

In 2008, Miller led a successful political coup in which he replaced minority leader Teresa Fedor.

[2] However, following the 2008 elections, Miller stepped down from the post to begin his transition to the private sector.

He recently completed a six-year appointment on the Central State University Board of Trustees.