All eyes are on Mumbai in the fourth phase of the ongoing Lok Sabha elections. The 'maximum city' is considered to comprise of bellwether constituencies, with the victorious party here managing to grab the throne in New Delhi, at least in the past few General elections. Hindustan Times' Associate Editor Aurangzeb Naqshbandi and Data & Political Economy Editor Roshan Kishore decode whether the incumbent BJP-Shiv Sena alliance, or the challenger Congress-NCP tie-up, has the upper hand. While the Congress was focusing on basic issues, BJP candidate Sadhvi Pragya's comments on 26/11 martyr Hemant Karkare have given it ammunition to target the ruling party. Also, lack of synergy between the Sena and BJP cadre is expected to hurt the ruling combine. Watch the full video for more.