The world's biggest elections  are underway in India, and so far elections have been completed in 21 out of 28 states. As voting nears its end, the competing political parties are trying to lure voters with lucrative and populist promises they say they will implement if they are elected.
Subramanian Swamy , a leading figure of the conservative Bharatya Janata Party  (BJP) whose prime minister candidate is Narendra Modi , caused much outrage in neighboring Bangladesh when he mentioned in an election rally in Assam that Bangladesh should compensate India  for its undocumented migrants there by giving the country one-third of its land.
He also claimed that since the independence of Bangladesh from Pakistan in 1971, one-third of Bangladesh's Muslim population migrated to India. According to him, Bangladesh should take them back or hand over one-third of land to India.
There are no reliable figures for how many Bangladeshi immigrants are in India, but a significant number  of Bangladeshis do migrate to India to reunite with family members, for job opportunities, to escape environmental  crises and other reasons. The wave of people in the past decade has prompted India to step up security along its border with Bangladesh, including the installation of barbed-wire fences.
Bangladeshi newspapers first picked up Swamy's remarks from Assam's Bengali daily Samayik Prasanga  on 19 April. Along with Nepal, Bhutan, Pakistan and China, the country's political analysts are closely following the election as international relations will be shaped by the policies of the parties that win.
Angry reactions soon followed. User Veja Beral  on forum projanmo.com commented:
বিজেপি বাংলাদেশ বিদ্বেষী দল। এরা এইবার ক্ষমতায় আসলে বাংলাদেশিদের কপালে শনি আছে। [..] তিস্তা, সীমান্ত কিছুতো হবেই না বরং যেইসব চুক্তি বাস্তবায়নাধীন সেই সব বন্ধ করতে কাজ করবে মোদি সরকার।
BJP is an anti-Bangladeshi party. If it comes to power, it will mean trouble for Bangladesh. The [long] pending issues like the Teesta water-sharing contract  and border disputes will remain unresolved and all implemented treaties will be stopped by the Modi government.
The user also wrote:
ভারতে কিছু অবৈধ বাংলাদেশি আছে এটা সবাই জানে কিন্তু সেটা ৫ কোটি (বিজেপির দাবি) এটা বিশ্বাসযোগ্য না। হয়তো ৫ লাখকে ৫ কোটি বলে প্রচার করে ভোট পাওয়ার জন্য।
There are a number of undocumented Bangladeshis in India that everybody knows. But the astronomical figure of 50 million (which is BJP's claim) is illogical and untrue. Maybe BJP is purposefully campaigning the figure 50 million instead of 500,000.
Shamim Sujaet  opined on the blog Shobdoneer:
বাংলাদেশ যেন খেলার পুতুল! যা খুশী ভাবতে পারো!
As if Bangladesh is a plaything. You can shape it however you like.
Meanwhile, Bangladeshi hacker group “Bangladesh Cyber 71″ allegedly hacked more than 300 of the Indian government's websites  in protest of Swamy's comments. The admin of the group told BanglaNews24.com  that they will continue the attacks until BJP withdraws the statement.
In retaliation, the official website of the Bangladesh Cabinet Division was apparently hacked  by an Indian hacking group.
Narendra Modi, the prime minister candidate from BJP, doubled down  on the comments during a rally in West Bengal:
You can write it down. After May 16, these Bangladeshis better be prepared with their bags packed.
Undocumented Bangladeshi immigrants has been a part of the BJP's agenda , which claims that they are being used as a votebank for the ruling Indian National Congress party. But Modi's comments indicate that this could be a political weapon they would use against their neighbor if the party comes to power.
This isn't a case of one-way migration, however. India would stand to lose its fifth largest source of remittance if relations were to sour. Around half a million Indians work in Bangladesh, and they remitted 3.716 million US dollars to India  last year.