Possible Clues:

• Be sure voter gets this reversing excessive employment
• Finished with American English? Too much of a good thing?
• Reason for muscle aches
• Draw on excessively
• Excessive exploitation very nearly blocks river
• Employ excessively, as muscles
• Old poetry university dons do to death
• Perhaps quote too much love poetry with uniform content
• Turn into a cliché
• Too much exercising leads to often very enervating wheeze