Possible Clues:

• I tried to help party that went with a swing
• At the polls one gets over around before you
• One participating in ballot against old leaders of the earlier regime
• Election Day participant
• One chooses which of the runners to back
• Person in a booth, maybe
• Lively dances (esp. Irish)
• Vicar about to back one making sign of the cross
• Polling booth figure
• Selector, for instance