The below list only covers seats whose vacancies were filled through by-elections. Conventionally, vacancies occurring with less than a year to go for the conclusion of the term, are generally left vacant for the remainder of the term. In the case of the 15th Lok Sabha, this means that by-elections would not have been held for vacancies post June 2013, with less than a year to go for the
2014 election. Only vacancies for which by-elections were held, i.e, occurring prior to May 2013, are mentioned here. • A total of 19 by-elections across seats in 11 different states were held through the duration of the 15th Lok Sabha, with the first in November 2009 and the last in August 2013. • 6 of these by-elections were necessitated by the death of the incumbent MP, and 13 due to resignation. • Of the 13 resignations, 1 was for vacating a second seat, 6 for becoming Chief Ministers of different states, 1 for becoming President, 2 for becoming MLAs and 3 due to party defections. • In May 2009,
Firozabad fell vacant due to the resignation of
Samajwadi Party MP
Akhilesh Yadav as he preferred to retain
Kannauj after winning two seats in the
2009 election.
Raj Babbar of
Indian National Congress won the seat in the by-election. • In June 2010,
Banka fell vacant due to the death of
independent MP
Digvijay Singh. His widow
Putul Kumari won the seat as an independent in the by-election. • In November 2010,
Kadapa fell vacant due to the resignation of Congress MP
Y. S. Jagan Mohan Reddy, who also resigned his party membership. He contested the seat again in the by-elections on a
YSR Congress Party ticket and won. • In February 2011,
Jamshedpur fell vacant due to the resignation of
Bharatiya Janata Party MP
Arjun Munda, as he became
Chief Minister of Jharkhand.
Ajoy Kumar of
Jharkhand Vikas Morcha (Prajatantrik) won the seat in the by-election. • In March 2011,
Bastar fell vacant due to the death of BJP MP
Baliram Kashyap. His son
Dinesh Kashyap of BJP won the seat in the by-election. • In June 2011,
Hisar fell vacant due to the death of
Haryana Janhit Congress MP
Bhajan Lal Bishnoi. His son
Kuldeep Bishnoi of HJC won the seat in the by-election. • In October 2011,
Kolkata Dakshin fell vacant due to the resignation of
All India Trinamool Congress MP
Mamata Banerjee, as she became
Chief Minister of West Bengal, after the
2011 West Bengal Legislative Assembly election.
Subrata Bakshi of Trinamool Congress won the seat in the by-election. • In November 2011,
Udupi-Chikkamagaluru fell vacant due to the resignation of BJP MP
D. V. Sadananda Gowda, as he became
Chief Minister of Karnataka.
K. Jayaprakash Hegde of Congress won the seat in the by-election. • In February 2012,
Nellore fell vacant due to the resignation of Congress MP
Mekapati Rajamohan Reddy, who also resigned his party membership. He contested the seat again in the by-elections on a
YSR Congress Party ticket and won. • In May 2012,
Kannauj fell vacant due to the resignation of SP MP Akhilesh Yadav, as he became
Chief Minister of Uttar Pradesh, after the
2012 Uttar Pradesh Legislative Assembly election. His wife,
Dimple Yadav of SP was elected unopposed from the seat in the by-elections. • In July 2012,
Jangipur fell vacant due to the resignation of Congress MP
Pranab Mukherjee, who also resigned his party membership, as he became
President of India, after his victory in the
2012 Indian presidential election. His son
Abhijit Mukherjee of Congress won the seat in the by-election. • In July 2012,
Tehri Garhwal fell vacant due to the resignation of Congress MP
Vijay Bahuguna, as he became
Chief Minister of Uttarakhand, after the
2012 Uttarakhand Legislative Assembly election.
Mala Rajya Laxmi Shah of BJP won the seat in the by-election. • In January 2013,
Mandi fell vacant due to the resignation of Congress MP
Virbhadra Singh, as he became
Chief Minister of Himachal Pradesh, after the
2012 Himachal Pradesh Legislative Assembly election. His wife
Pratibha Singh of Congress won the seat in the by-election. • In January 2013,
Porbandar fell vacant due the resignation of Congress MP
Vitthalbhai Radadiya, as he became an MLA in the
Gujarat Legislative Assembly, after his victory from
Dhoraji in the
2012 Gujarat Legislative Assembly election. However, he soon after resigned as MLA too, as well as his party membership. He contested the Lok Sabha seat again in the by-election on a BJP ticket and won. • In January 2013,
Maharajganj, Bihar fell vacant due to the death of
Rashtriya Janata Dal MP
Umashankar Singh.
Prabhunath Singh of RJD won the seat in the by-election. • In March 2013,
Banaskantha fell vacant due to the death of Congress MP
Mukesh Gadhvi.
Haribhai Chaudhary of BJP won the seat in the by-election. • In April 2013,
Howrah fell vacant due to the death of Trinamool Congress MP
Ambica Banerjee.
Prasun Banerjee of Trinamool Congress, a retired football player-turned-politician, won the seat in the by-election. • In May 2013,
Mandya fell vacant due to the resignation of
Janata Dal (Secular) MP
N. Chaluvaraya Swamy, as he became an MLA in the
Karnataka Legislative Assembly, after his victory from
Nagamangala in the
2013 Karnataka Legislative Assembly election.
Divya Spandana of Congress won the Lok Sabha seat in the by-election. • In May 2013,
Bengaluru Rural fell vacant due to the resignation of JDS MP
H. D. Kumaraswamy, as he became an MLA in the Karnataka Legislative Assembly, after his victory from
Ramanagara in the 2013 Karnataka Legislative Assembly election.
D. K. Suresh of Congress won the Lok Sabha seat in the by-election. ==References==