Raj Babbar entered politics by joining
Janata Dal in 1989, which was led by
V. P. Singh. From 1994 to 1999 he was a member of the
Rajya Sabha. He was re-elected in the 14th Lok Sabha elections for his second term in 2004. He was suspended from
Samajwadi Party in 2006. Later he joined
Indian National Congress in 2008 and was elected for his fourth term as Member of Parliament in 2009, by defeating
Dimple Yadav, wife of
Akhilesh Yadav and daughter-in-law of
Mulayam Singh Yadav. In the 2014
Lok Sabha elections, he contested from
Ghaziabad and lost to General V. K. Singh. He was appointed as the president of Uttar Pradesh congress committee (UPCC), but in 2019 elections he couldn't even manage to save his own seat and lost to Rajkumar Chahar of the Bharatiya Janata Party by a huge margin of 4,95,065 votes. Raj Babbar, in the capacity of Congress spokesman, created controversy in 2013, by stating that Rs.12 is sufficient for a common man to get a full meal in Mumbai, which drew severe criticism. He also said that a poor person in India can get full meals two times a day, within Rs. 28 to 32 and opposition parties termed Raj Babbar's statement laughable. In July 2013, he compared
Narendra Modi to
Adolf Hitler, which also created controversy. In the
2024 Indian general election, Raj Babbar contested from the
Gurgaon Lok Sabha constituency on
Indian National Congress ticket. In a tight contest,
Bharatiya Janata Party (
BJP) candidate and Union Minister Rao Inderjit Singh registered his fourth straight win from the Gurgaon Lok Sabha constituency, defeating Raj Babbar by 75,079 votes. ==Personal life==