Results of the 2011 Tamil Nadu Legislative Assembly election

The following is the detailed result of the 2011 Tamil Nadu Legislative Assembly election.

Result by pre-poll alliance


! style="background-color:#E9E9E9;text-align:left;vertical-align:top;" |Alliance/Party !style="width:4px" | ! style="background-color:#E9E9E9;text-align:right;" |Seats won ! style="background-color:#E9E9E9;text-align:right;" |Change ! style="background-color:#E9E9E9;text-align:right;" |Popular vote ! style="background-color:#E9E9E9;text-align:right;" |Vote % ! style="background-color:#E9E9E9;text-align:right;" |Adj. %‡ ! style="background-color:#009900; color:white"|AIADMK-led Alliance ! style="background-color: " | ! style="background-color: " | ! style="background-color: #008080" | ! style="background-color: #000080" | ! style="background-color: #0000FF" | ! style="background-color: #FF00FF" | ! style="background-color: Black" | ! style="background-color: #800000" | ! style="background-color:#FF0000; color:white"|DMK+ alliance ! style="background-color: Red" | ! style="background-color: Red" | ! style="background-color: #00BBFF" | ! style="background-color: #800080" | ! style="background-color: " | ! style="background-color: " | ! style="background-color:Gray; color:white"|Others ! style="background-color: " | ! style="background-color: #FF9933" | ! style="background-color: " | ! style="background-color: " | ! style="background-color: " | †: MDMK left the AIADMK alliance due to failed seat sharing talks and boycotted this election.
 * 203
 * +130
 * 19,085,762
 * colspan=2 style="text-align:center;vertical-align:middle;"| 51.9%
 * AIADMK
 * AIADMK
 * 150
 * +93
 * 14,150,289
 * 38.4%
 * 53.9%
 * DMDK
 * DMDK
 * 29
 * +28
 * 2,903,828
 * 7.9%
 * 44.8%
 * CPI(M)
 * CPI(M)
 * 10
 * +1
 * 888,364
 * 2.4%
 * 50.3%
 * CPI
 * CPI
 * 9
 * +3
 * 727,394
 * 2.0%
 * 48.6%
 * MNMK
 * MNMK
 * 2
 * +2
 * 181,180
 * 0.5%
 * 42.4%
 * PT
 * PT
 * 2
 * +2
 * 146,454
 * 0.4%
 * 54.3%
 * AIFB
 * AIFB
 * 1
 * +1
 * 88,253
 * 0.2%
 * 51.2%
 * 31
 * -126
 * 14,530,215
 * colspan=2 style="text-align:center;vertical-align:middle;"| 39.5%
 * DMK
 * DMK
 * 23
 * -77
 * 8,249,991
 * 22.4%
 * 42.1%
 * INC
 * INC
 * 5
 * -32
 * 3,426,432
 * 9.3%
 * 35.6%
 * PMK
 * PMK
 * 3
 * -15
 * 1,927,783
 * 5.2%
 * 39.6%
 * VCK
 * VCK
 * 0
 * -2
 * 555,965
 * 1.5%
 * 34.0%
 * KMK
 * KMK
 * 0
 * 370,044
 * 1.0%
 * 32.5%
 * 32.5%
 * 0
 * -4
 * 3,137,137
 * colspan=2 style="text-align:center;vertical-align:middle;"|8.5%
 * BJP
 * BJP
 * 0
 * 819,577
 * 2.2%
 * 2.6%
 * MDMK†
 * MDMK†
 * MDMK†
 * -3
 * IND and others
 * IND and others
 * IND and others
 * IND and others
 * IND and others
 * IND and others
 * 0
 * -1
 * 2,120,476
 * 5.8%
 * N/A
 * style="text-align:center;" |Total
 * style="text-align:center;" |Total
 * 234
 * 36,845,373
 * 100%
 * style="text-align:left;" colspan="4" |Valid votes
 * align="right" | 36,845,373
 * align="right" |99.89
 * colspan="4" rowspan="5" style="background-color:#E9E9E9" |
 * style="text-align:left;" colspan="4" |Invalid votes
 * align="right" |40,853
 * align="right" |0.11
 * style="text-align:left;" colspan="4" |Votes cast / turnout
 * align="right" | 36,886,226 
 * align="right" | 78.29
 * style="text-align:left;" colspan="4" |Abstentions
 * align="right" | 10,229,620
 * align="right" |21.71
 * style="text-align:left;" colspan="4" |Registered voters
 * align="right" |47,115,846 
 * colspan="1" style="background-color:#E9E9E9"|
 * }
 * align="right" | 10,229,620
 * align="right" |21.71
 * style="text-align:left;" colspan="4" |Registered voters
 * align="right" |47,115,846 
 * colspan="1" style="background-color:#E9E9E9"|
 * }
 * }
 * }

‡: Vote % reflects the percentage of votes the party received compared to the entire electorate that voted in this election. Adjusted (Adj.) Vote %, reflects the average % of votes the party received per constituency that they contested.

Sources: Election Commission of India and Hindu Newspaper

Results by constituency

 * P. Vetrivel resigned on 17 May 2015.