Chandigarh, April 26 -- The BJP will hold rallies of its national president Amit Shah on May 5 in Yamunanagar and Uttar Pradesh chief Minister Yogi Adityanath's rally on May 8 at Panchkula in favour of party's Ambala nominee Rattan Lal Kataria, party's Ambala parliamentary in-charge Jagdish Chopra said on Thursday. On 2014 promises not being fulfilled, Kataria said, "I accept that I failed in my duty to bring railway connectivity from Yamunanagar via Naraingarh and Chandigarh. I can assure you that this time, I will make every effort to ensure this is done." He categorically denied having any differences with Haryana health minister Anil Vij and claimed that the party was united in its efforts....