From Wikipedia:
The electric chair continued to be solely used until 1994, when legislation was enacted giving inmates the choice of lethal injection or the electric chair, with lethal injection the default method if no choice was made. Six inmates have since opted for the Virginia electric chair; the most recent was Paul Warner Powell March 18, 2010. Former Gov. Timothy M. Kaine has also stated that he opposes the option of the electric chair, but he did not move to drop it as an option while in office.