Patrick Semansky/AP
- Trump supporters confronted Mike Pence at a presidential campaign event, calling him a "traitor."
- Trump just pleaded not guilty in the 2020 election case, his third arraignment of the year.
- Pence, lagging behind in GOP polls, still tried to win over the MAGA supporters during the event.
Supporters of former President Donald Trump crashed a presidential campaign event for former Vice President Mike Pence on Friday.