The BJP has asserted that its alliance with JD(U) is firm and both the parties will fight unitedly the forthcoming Assembly elections in Bihar. Briefing reporters in New Delhi today, party spokesman Mr. Shahnaz Hussain said, there are no differences and the assembly elections will be contested on the issue of development of Bihar. Replying to a question on whether Gujarat Chief Minister Narendra Modi will campaign in Bihar, Mr. Hussain said that the election campaign committee of the party will decide on the issue.