Possible Clues:

• What could show party's successful, right after e.g. most wine gets drunk
• Device predicting election, revolutionary more set to engage left or right?
• Move to and fro round gauge, it's used during election
• Might this illustrate when left or right in a little trouble initially? I'm not sure
• Voting shift device
• Feature of election night gets more excited covering victory
• Election night pendulum?
• Device demonstrating changes in voting intention