Mapping the Delhi–Mumbai Expressway

NHAI describes the Delhi–Mumbai Expressway as a 1,350-kilometre project split across 52 packages. I wanted to see what that route looks like as political geography, so I intersected the surveyed alignment with constituency boundaries and assembled election results for the places it crosses.

This first version maps the KMP–JNPT section. It finds 21 Lok Sabha constituencies, 63 Assembly constituencies and 48 project-marked interchanges.

The map opens with 2024 Lok Sabha winners. Switch to Margin to compare how competitive each result was, Swing to see how the NDA margin moved since 2019, or Assembly to inspect the state elections underneath.

Where the map starts and stops

The alignment starts around Sohna/KMP in Haryana, crosses Rajasthan, Madhya Pradesh and Gujarat, then continues through Maharashtra to the JNPT spur. It also clips Dadra and Nagar Haveli, which has a Lok Sabha constituency but no Assembly layer.

The roughly 59-kilometre DND–Faridabad–KMP approach is a separate NHAI package. It is not included in this version.

The route still covers very different places: the NCR edge, Rajasthan’s Dausa–Kota belt, western Madhya Pradesh, eastern and southern Gujarat, and the Palghar–Bhiwandi–JNPT approach in Maharashtra.

What changed at the ballot box

The 2014 map was nearly uniform: BJP won twenty of the 21 constituencies and the Shiv Sena won the other. In 2019, BJP and Shiv Sena held twenty seats between them while Dadra and Nagar Haveli elected an independent. By 2024, the NDA held seventeen and the opposition held four.

Between 2019 and 2024, twelve constituencies moved away from the NDA margin and nine moved toward it. The geography is more useful than the corridor-wide count.

All four Rajasthan seats moved away from the NDA. Bharatpur, Dausa and Tonk–Sawai Madhopur changed from BJP to Congress. BJP retained Kota, but its margin fell from 20.45 points to 2.8.

Haryana’s two mapped seats stayed with BJP while becoming much closer. The margin in Faridabad fell from 48.08 points to 11.76; Gurgaon’s fell from 26.7 to 4.69. In Gujarat, BJP retained all eight corridor seats and five moved toward the NDA margin. Navsari remained the clearest stronghold, with a 57.81-point margin in 2024.

Maharashtra is less tidy. Bhiwandi changed from BJP to NCP-SP, Maval stayed with the NDA through the Shiv Sena split, and Palghar moved from the undivided Shiv Sena to BJP. Dadra and Nagar Haveli moved in the opposite direction from most of the northern seats: from an independent winner in 2019 to BJP by 28.01 points in 2024.

There is no single corridor pattern. That is the interesting part of the map.

What the map can show

The Assembly view adds another layer. Each state has its own election calendar, so it uses the relevant years for that state. The interchange markers provide geographic anchors along the road.

The interchanges are not a measure of access, benefit or exposure. The constituency intersections also cannot tell us how land acquisition was experienced or how a voter weighed the project. They give us a baseline, not a counterfactual.

The map identifies the electoral geography crossed by the road and records three general elections against it.

When the expressway is open end to end and there has been another cycle of elections, I will come back to these constituencies and see whether anything interesting shows up.