WASHINGTON (AP) – Tim Kaine is predicting a “scorched-earth” debate performance from Republican Donald Trump.

Ahead of Wednesday night’s presidential debate, the Democratic vice presidential nominee said running mate Hillary Clinton will be cool and collected in the face of Trump’s likely insults and histrionics.

Kaine made the comments at a campaign rally in Springfield, Ohio, where he called Trump a “bully.”

Both presidential campaigns have been using their debate guests as a tool to try to get inside their rivals’ heads.

Trump is bringing Barack Obama’s half-brother, Malik Obama, a Trump supporter. Clinton is bringing frequent Trump critic and billionaire Mark Cuban and Hewlett Packard Enterprise CEO Meg Whitman.

At the second debate Trump invited women who have accused former President Bill Clinton of sexually harassing or assaulting them.