Possible Clues:

• Spirit initially prevailing in 17th-century parliament
• Something to eat and drink quietly
• Fanny
• Depleted legislators, president having lost fifth in elections
• Beef roast cut
• Meat and drink — first requirement for party
• Those few who stay on after the others have left or been forced out
• Caboose
• A ____ steak is often called “sirloin” in the USA
• Unusual pressure in seat