Related Clues:

• Hold the floor
• Give a sermon
• Hold forth
• Electioneer
• Do some campaign work
• Provide an address
• Give one's address
• Give a speech
• Wax eloquent
• Use a soapbox
• Talk pompously
• Emulate Demosthenes
• Spout rhetoric
• Take the stump
• Captivate the crowd, maybe