Khattar joined
Rashtriya Swayamsevak Sangh (RSS) in 1977 and became a full-time pracharak three years later. As a pracharak, he is a lifelong bachelor. He worked as a full-time pracharak for 17 years before moving to BJP, in 1994. He was the Chairman of BJP's Haryana Election Campaign Committee for
2014 Lok Sabha Elections. Subsequently, he became a member of BJP's National Executive Committee. In 2014, Khattar was nominated as BJP's candidate from
Karnal constituency for the Haryana Legislative Assembly election. The party's workers and supporters in Karnal launched a signature campaign, asking the party leadership to field a local candidate instead of him. His opponent, the
Indian National Congress candidate and
Deepender Singh Hooda, accused Khattar of being an "outsider" not native to Karnal. But Modi wave helped Mr. Khattar win elections by heavy margin.
Chief minister (2014-2024) In the elections, the BJP gained a majority in Haryana for the first time, and Khattar won his maiden election by a margin of 63,736 votes. During a party meeting, his name was proposed for the
Chief Minister of Haryana post by Haryana BJP President
Ram Bilas Sharma, seconded by other strong Chief Minister of Haryana claimant
Rao Inderjeet Singh and supported by many
MLAs. He became the BJP's first Chief Minister of Haryana after his swearing-in ceremony on 26 October 2014. On 27 October 2019, Khattar was sworn in as the Chief Minister for the second time, after making an alliance with
Dushyant Chautala's
Jannayak Janta Party post
2019 Haryana Legislative Assembly election. Khattar submitted his resignation to Haryana Governor
Bandaru Dattatreya on 12 March 2024 after the development came amid speculation of cracks emerging in the state's ruling BJP and
Jannayak Janta Party (JJP) coalition over seat sharing ahead of the
2024 Lok Sabha elections, and on 13 March he tendered his resignation from the Haryana Legislative Assembly. In March 2024, he was announced as the BJP candidate for the
Karnal constituency in the
2024 Indian general election. Khattar subsequently won from the seat.
Union Minister (2024-) In June 2024, Khattar was appointed the
Minister of Power and
Minister of Housing and Urban Affairs. In April 2026, Khattar visited Bhutan in his capacity as Union Minister of Power, meeting with Bhutan's Energy Minister to discuss strengthening bilateral energy cooperation and reviewing the progress of the Punatsangchhu hydropower projects, which are jointly developed by India and Bhutan. ==Major initiatives==