"BJP has filed complaint against Congress candidates Jatin Kella from Maninagar assembly seat and Kanti Sodha from Anand assembly seat for violating poll code as they were wearing scarf with Congress' election symbol on it when they went to vote," BJP state unit spokesperson Harshad Patel said.
The complaint was filed before the Election Commission seeking legal action against both the candidates, Patel added.
Voting is underway in one Lok Sabha constituency and nine assembly seats in Gujarat.
Maninagar assembly seat was vacated by Prime Minister Narendra Modi after he emerged victorious from Lok Sabha seats in Gujarat (Vadodara) and Uttar Pradesh (Varanasi).
Vadodara Lok Sabha seat is witnessing by-poll today as it was also vacated by Modi after he preferred Varanasi over the constituency in his home-town.