Following is the list of strongest candidates against BJP led NDA candidates. Voting for any other candidate will only divide the anti-BJP votes.
| Constituency | State/UT | Party | Candidate |
|---|---|---|---|
| Andaman and Nicobar Islands | Andaman and Nicobar Islands | INC | Kuldeep Rai Sharma |
| Arunachal East | Arunachal Pradesh | INC | Bosiram Siram |
| Arunachal West | Arunachal Pradesh | INC | Nabam Tuki |
| Dibrugarh | Assam | AJP | Lurinjyoti Gogoi |
| Jorhat | Assam | INC | Gaurav Gogoi |
| Kaziranga | Assam | INC | Roselina Tirkey |
| Lakhimpur | Assam | INC | Uday Shankar Hazarika |
| Sonitpur | Assam | INC | Prem Lal Ganju |
| Aurangabad | Bihar | RJD | Abhay Kushwaha |
| Gaya | Bihar | RJD | Kumar Sarvjeet |
| Jamui | Bihar | RJD | Archana Ravidas |
| Nawada | Bihar | RJD | Shravan Kushwaha |
| Bastar | Chhattisgarh | INC | Kawasi Lakhma |
| Udhampur | Jammu & Kashmir | INC | Choudhary Lal Singh |
| Lakshadweep | Lakshadweep | INC | Mohd Hamdullaha Sayeed |
| Balaghat | Madhya Pradesh | INC | Samrat Ashok Singh Saraswar |
| Chhindwara | Madhya Pradesh | INC | Nakul Nath |
| Mandla | Madhya Pradesh | INC | Omkar Singh Markam |
| Shahdol | Madhya Pradesh | INC | Phunde Lal Singh Marko |
| Sidhi | Madhya Pradesh | INC | Kamleshwar Indrajit Kumar |
| Bhandara-Gondiya | Maharashtra | INC | Prashant Yadavrao Padole |
| Chandrapur | Maharashtra | INC | Pratibha Dhanorkar |
| Gadchiroli-Chimur | Maharashtra | INC | Namdev Dasaram Kirsan |
| Nagpur | Maharashtra | INC | Vikas Thakare |
| Ramtek | Maharashtra | INC | Rashmi Shyamkumar Barve |
| Inner Manipur | Manipur | INC | Angomcha Bimol Akoijam |
| Outer Manipur | Manipur | INC | Alfred Kanngam S. Arthur |
| Shillong | Meghalaya | INC | Vincent H Pala |
| Tura | Meghalaya | INC | Saleng A Sangma |
| Mizoram | Mizoram | INC | Lalbiakzama |
| Nagaland | Nagaland | INC | S Supongmeren Jamir |
| Alwar | Rajasthan | INC | Lalit Yadav |
| Bharatpur | Rajasthan | INC | Sanjana Jatav |
| Bikaner | Rajasthan | INC | Govind Ram Meghwal |
| Churu | Rajasthan | INC | Rahul Kaswan |
| Dausa | Rajasthan | INC | Murari Lal Meena |
| Ganganagar | Rajasthan | INC | Kuldeep Indora |
| Jaipur | Rajasthan | INC | Pratap Singh Khachariyawas |
| Jaipur Rural | Rajasthan | INC | Anil Chopra |
| Jhunjhunu | Rajasthan | INC | Brijendra Singh Ola |
| Jodhpur | Rajasthan | INC | Karan Singh Uchiyarda |
| Karauli-dholpur | Rajasthan | INC | Bhajan Lal Jatav |
| Nagaur | Rajasthan | RLP | Hanuman Beniwal |
| Sikar | Rajasthan | CPI(M) | Amra Ram |
| Sikkim | Sikkim | INC | Gopal Chettri |
| Arakkonam | Tamil Nadu | DMK | S Jagathrakshakan |
| Arani | Tamil Nadu | DMK | Dharanivendhan |
| Chennai Central | Tamil Nadu | DMK | Dayanidhi Maran |
| Chennai North | Tamil Nadu | DMK | Kalanidhi Veerasamy |
| Chennai South | Tamil Nadu | DMK | Thamizhachi Thangapandian |
| Chidambaram | Tamil Nadu | VCK | Tholkappiyan Thirumavalavan |
| Coimbatore | Tamil Nadu | DMK | Ganapathy Rajkumar |
| Cuddalore | Tamil Nadu | INC | M.K. Vishnu Prasad |
| Dharmapuri | Tamil Nadu | DMK | A Mani |
| Dindigul | Tamil Nadu | CPM | R Sachidanandam |
| Erode | Tamil Nadu | DMK | KE Prakash |
| Kallakurichi | Tamil Nadu | DMK | Malaiarasan |
| Kancheepuram | Tamil Nadu | DMK | K Selvam |
| Kanniyakumari | Tamil Nadu | INC | Vijay Vasanth |
| Karur | Tamil Nadu | INC | S. Jothimani |
| Krishnagiri | Tamil Nadu | INC | K Gopinath |
| Nilgiris | Tamil Nadu | DMK | A Raja |
| Perambalur | Tamil Nadu | DMK | Arun Nehru |
| Pollachi | Tamil Nadu | DMK | K Eshwaraswamy |
| Puducherry | Puducherry | INC | V.E. Vaithilingam |
| Sivaganga | Tamil Nadu | INC | Karti P Chidambaram |
| Sriperumbudur | Tamil Nadu | DMK | TR Baalu |
| Tenkasi | Tamil Nadu | DMK | Rani |
| Thanjavur | Tamil Nadu | DMK | S Murasoli |
| Theni | Tamil Nadu | DMK | Thanga Tamilselvan |
| Thiruvallur | Tamil Nadu | INC | Sasikanth Senthil |
| Thoothukudi | Tamil Nadu | DMK | Kanimozhi Karunanidhi |
| Tirunelveli | Tamil Nadu | INC | Robert Bruce |
| Tiruvannamalai | Tamil Nadu | DMK | C N Annadurai |
| Vellore | Tamil Nadu | DMK | DM Kathir Anand |
| Viluppuram | Tamil Nadu | VCK | D. Ravikumar |
| Virudhunagar | Tamil Nadu | INC | B. Manickam Tagore |
| Tripura West | Tripura | INC | Ashish Kumar Saha |
| Bijnor | Uttar Pradesh | SP | Yashvir Singh |
| Kairana | Uttar Pradesh | SP | Iqra Hasan |
| Moradabad | Uttar Pradesh | SP | Ruchi Veera |
| Muzaffarnagar | Uttar Pradesh | SP | Harendra Malik |
| Nagina | Uttar Pradesh | SP | Manoj Kumar |
| Pilibhit | Uttar Pradesh | SP | Bhagwat Sharan Gangwar |
| Rampur | Uttar Pradesh | SP | Mohibulla Nadvi |
| Saharanpur | Uttar Pradesh | INC | Imran Masood |
| Almora | Uttarakhand | INC | Pradeep Tamta |
| Garhwal | Uttarakhand | INC | Ganesh Godiyal |
| Haridwar | Uttarakhand | INC | Virender Rawat |
| Nainital-Udhamsingh Nagar | Uttarakhand | INC | Prakash Joshi |
| Tehri Garhwal | Uttarakhand | INC | Jot Singh Guntsola |
| Alipurduars | West Bengal | AITC | Prakash Chik Baraik |
| Cooch Behar | West Bengal | AITC | Jagadish C Basuniya |
| Jalpaiguri | West Bengal | AITC | Nirmal Ch Roy |
