Blaming senior BJP leader Sushil Kumar Modi for the party's poor show in the recent bypolls in Bihar, actor-politician Shatrughan Sinha today said he would not shun responsibility of leading the party in next year's Assembly election, if leaders "collectively" picked him for the role.br br "He (Sushil Modi) acted as one man army (in the bypoll in Bihar recently) which did not yield good results for the BJP in the state," Sinha told reporters.