Possible Clues:

• On the fringes
• Man involved with a girl on the side
• Such a seat may be alarming to an MP
• Start to spoil the drink and it has them all on edge before a half-century
• No 7, showing alarming instability
• Very close (decision)
• Peripheral in alarming way
• On the edges of
• Alarming development, having small majority at risk
• Such a seat may be alarming to M P