Mumbai, May 1 -- Three candidates representing three constituencies across Mumbai filed their nominations on Tuesday ahead of the Lok Sabha elections scheduled for May 20. Union minister and BJP candidate Piyush Goyal has filed his nomination from the Mumbai North constituency. While the Congress candidate Varsha Gaikwad filed from Mumbai North Central, Shiv Sena (UBT) Sanjay Dina Patil filed from Mumbai North East constituency....