In the November 2012 election, one Ohio state house district race had disputed election returns. Final figures show that Republican incumbent Al Landis of the 98th district defeated his Democratic opponent, Josh O’Farrell, by eight votes. However, irregularities were charged. The Ohio House will adjudicate the issue. On March 13 a committee was appointed to investigate the details of the vote count problems. See this story, which says the process will take several weeks.
The canvassing board determined that Al Landis had been elected, and he was sworn in and has participated in proceedings of the House.
The legislature could overturn that result.