Hundreds of Rep. Ron Paul’s (R-Texas) supporters staged a walkout during Sen. John McCain’s Wednesday evening speech at the Republican National Convention in Tampa, Fla.

A long stream of Paul’s backers from Maine, Oklahoma, Oregon, Arizona, and several other states protested the Republican National Committee’s treatment of Paul and his supporters by walking out of the convention hall with chants of, “As Maine goes, so goes the nation!”

The Paul supporters were protesting a rule change that the RNC adopted the night before in floor proceedings that would allow any future presumptive presidential nominee to disown delegates who support another candidate. The RNC refused to seat half of the delegates Ron Paul won from Maine in a dispute with that state’s party.