He is a member of the South Carolina House of Representatives from the 1st District (parts of Oconee & Pickens Counties), serving since 2003.
[2] As of 2024[update], Whitmire serves as Chair of the College and University Trustee Screening Commission, a Joint Committee with members from the House and Senate.
[4] In 2003, he would be elected to the 1st House District of South Carolina, representing ports of Oconee and Pickens Counties.
[5] Due to his role as Chair of the College and University Trustee Screening Commission, Whitmire led the Commission in 2022 when it debated firing the entire board of trustees for the University of South Carolina.
[12] However, he and State Senator Thomas C. Alexander worked to get a $5.6M grant for Walhalla to build a community center placed in the 2023-24 South Carolina state budget signed into law by Governor Henry McMaster.