Possible Clues:

• Impression made by one politician introducing bill
• Influence of the devil at the end of 13 down
• Consequences of one initially minor agreement
• Typeface commonly used for memes
• Effect of one parliamentary bill introduced by member
• Something performed by troublemaker for powerful effect
• Function under spirit's strong effect
• A marked effect or influence
• Influence politician supporting one bill
• Collision — shock