One person was injured as Congress and BJP workers clashed on way to a polling station at Deeg in Bharatpur Lok Sabha constituency of Rajasthan on Wednesday.
Trouble broke out when one group objected to the other wooing voters on way to a polling booth at Sinsini.
Someone from the group fired from a revolver injuring one person, Additional Director General of Police (Law and Order) SN Jairath said.
The clashing groups also smashed an electronic voting machine, he said.
Police used mild force to disperse the mob, Jairath said.