Possible Clues:

• Key test capturing singular way to keep you looking thin
• Stays on track, gracious and firm
• Stays, generally, well prepared, on track
• Stays keen about county overlooked by daughter
• My fixed training route that gives me a shapely figure!
• Stays in fashionable resort in outskirts of city
• Not a crude attempt to get set of supporters
• Company run on fixed lines stays involved in this