The largest Lok Sabha constituency in India by area is:

Ladakh is the largest Lok Sabha constituency in India in terms of area, covering about 1.7 lakh square kilometres in the high Himalayan region.

About Ladakh:

• Ladakh is a cold desert region lying between the Karakoram and the Great Himalayan ranges.
• It includes the districts of Leh and Kargil.
• It is now a Union territory without a legislature.
• It has one Lok Sabha seat.

Why it is the largest:

• Ladakh has a very large area but a small population, because of its harsh climate and mountainous terrain.
• Seats are allotted on the basis of population, so the whole region forms just one constituency.

Other large constituencies by area:

• Barmer in Rajasthan, which lies in the Thar Desert.
• Kutch in Gujarat.
• Arunachal West and Arunachal East in Arunachal Pradesh.

Smallest constituency by area:

Chandni Chowk in Delhi is among the smallest constituencies by area.

Largest by number of voters:

Malkajgiri in Telangana has been among the largest constituencies by number of voters.

Smallest by number of voters:

Lakshadweep has the fewest voters.

Delimitation:

• The boundaries of constituencies are fixed by the Delimitation Commission.
• The last delimitation, based on the 2001 census, came into effect from the 2009 general elections.

Challenges in large constituencies:

• In very large constituencies like Ladakh, campaigning and conducting elections are difficult because of long distances and difficult terrain.
• The Election Commission sets up polling stations in remote areas, sometimes for just a handful of voters.

Strategic importance of Ladakh:

• Ladakh borders China and Pakistan and is very important for India's defence.
• The Siachen Glacier and the Galwan Valley lie in this region.

Why not the other options?

• ✗Barmer, Kutch and Arunachal West are large constituencies, but smaller than Ladakh.