Watch live: Donald Trump holds rally at Ohio high school before tight special election

Donald Trump is appearing at a rally outside Columbus, Ohio on Saturday.

The rally is happening at Olentangy Orange High School in Ohio's 12th congressional district. The district has been called an "unshakable Republican bedrock" and was once represented by Ohio Governor John Kasich, but is showing signs of flipping.

A recent Monmouth University poll showed Republican state Sen. Troy Balderson with only a 1-point edge.

Watch below.