An FIR has been registered and efforts are on to arrest the accused who attacked her while she was headed to Nannhe Park from Dwarka for a public meeting, police said.
"An FIR has been registered on the complaint of Sudha Sinha and investigation is on. No one has been arrested in this connection so far," said a senior police officer.
In her complaint, Sinha alleged that her SUV was followed by four motorcycle borne youths when she was going for the public meeting. They tried to attack her near Malhotra Tyre factory and left after threatening her to pull out of the election.
Delhi Congress president Ajay Maken condemned the incident and demanded arrest of the accused.
"The attack on Sudha Sinha has proved that women are not safe in Delhi, even if she is a political figure, and it shows complete break down of law and order under the dispensation of the AAP and BJP," he said.