He also lashed out at veteran Congress leader Ambika Soni for her statement on the "repercussions of having a Hindu chief minister in Punjab".
Jakhar, the former president of Punjab Congress, said the party had never named its CM face adding that it was only an exception that the Congress high command had declared Captain Amarinder Singh as the chief ministerial candidate in the run-up to the 2017 state assembly polls.
The former Punjab Congress chief had been upset with the party for serving him a show-cause notice.
Sunil Jakhar was among the front runners for the chief ministerial post after the exit of Amarinder Singh. But the party preferred Charanjit Singh Channi, who became the first chief minister of Punjab from the Scheduled Caste community.
The Centre's move on Chandigarh has raised the hackles of various parties in Punjab, with Aam Aadmi Party national convener Arvind Kejriwal terming it as a "direct attack" on Punjab's identity and constitutional rights.
BJP president J P Nadda also appointed former Congress spokesperson Jaiveer Shergill its national spokesperson.
He also said he even declined the post of deputy chief minister offered by Congress leader Rahul Gandhi to him.
The Congress disciplinary committee had on April 11 given a show-cause notice to Jakhar for alleged anti-party activities and sought a reply within a week.
Directly questioning the party's high command's decision on the appointment of Sidhu as the new Punjab Congress chief, Jakhar said that the person who was trying to patch up the rift between Captain Amarinder Singh and Sidhu was forgotten by the Congress party.
Mhatre's maiden ton, Dube blitz fire Mumbai to seven-wicket win over Vidarbha
Punjab Chief Minister Charanjit Singh Channi, state Congress chief Navjot Singh Sidhu and senior leader Sunil Jakhar met with former party president Rahul Gandhi at his Delhi residence on Wednesday.
Prime Minister Narendra Modi announced a Rs 1,600-crore assistance package for flood-hit Punjab after reviewing the damage. He also announced ex gratia for the deceased and injured. The state is battling its worst deluge since 1988.
Amid the ongoing turmoil in the Punjab Congress, former state party chief Sunil Jakhar on Thursday said there should be an end to attempts to undermine the authority of the Punjab chief minister time and again.
Jakhar, who is not an MLA, is believed to be close the top leadership and is considered a prominent Hindu face of the party.
The committee has given its recommendations to Congress president Sonia Gandhi, who will take necessary action, the sources pointed out.
'The BJP will not win a single seat in Punjab.'
The Congress won this seat after the 2009 Lok Sabha poll when Congress candidate Partap Singh Bajwa had won.
The Aam Aadmi Party's MP and lone Lok Sabha member Sushil Kumar Rinku joined the Bharatiya Janata Party on Wednesday along with party MLA Sheetal Angural, dealing a blow to the party already facing a crisis following the arrest of its leader and Delhi Chief Minister Arvind Kejriwal.
The BJP knows how to play with people's lives and bodies, former Punjab Chief Minister Charanjit Singh Channi said.
Former Congress MLA from Barnala, Kewal Dhillon, and former Shiormani Akali Dal MLAs Sarup Chand Singla and Mohinder Kaur Josh also joined the BJP.
Sidhu had replaced Sunil Jhakhar as PCC chief in July this year.
As part of protests, farmers ask questions to BJP leaders and show them black flags for not agreeing to their demands.
In a big organisational rejig, the BJP named Union minister G Kishan Reddy, Sunil Jakhar and Babulal Marandi as party presidents in Telangana, Punjab and Jharkhand respectively.
Opposition parties targeted the Chief Minister Bhagwant Mann-led state government over the law and order situation and demanded that he step down on moral grounds.
Congress president Sonia Gandhi on Sunday appointed Navjot Singh Sidhu as the new president of the party's Punjab unit, notwithstanding the opposition from Chief Minister Amarinder Singh.
The panel, chaired by Mallikarjun Kharge, has been tasked with addressing differences between Punjab Chief Minister Amarinder Singh and former minister Navjot Singh Sidhu.
The decision to expel Dayma was announced by Onkar Singh Lakhawat, the chairman of the Rajasthan BJP's disciplinary committee.
After Congress president Sonia Gandhi met leaders of the G-23 grouping to resolve internal party issues, former Punjab Congress chief Sunil Jakhar on Wednesday said "indulging the dissenters too much" will encourage more dissent.
The state had witnessed a record single-day spike of 7,014 cases on Sunday.
A panel of Union ministers will hold a fourth round of talks with farmer leaders in Chandigarh on Sunday over their demands, including loan waiver and bringing an ordinance on giving legal guarantee to a minimum support price (MSP) for crops.
The Bharti Kisan Union (Ekta Ugrahan) will on Saturday hold dharnas outside the residences of three senior Bharatiya Janata Party leaders in Punjab on the fifth day of the farmers' protest over their various demands, including a legal guarantee for a minimum support price (MSP).
A meeting of the Punjab Congress Legislative Party, which was slated for 11 am on Sunday, has been deferred, with party sources saying that a consensus is yet to be made on the name of the new CLP leader.
Kumar on Tuesday resigned from the Congress after a 46-year association, saying he can best serve national causes outside the party fold.
In an editorial in party mouthpiece Saamana, the party said that while on the one hand the Bharatiya Janata Party has already started preparing for the 2024 Lok Sabha elections, the Congress is in dire straits.
After the Opposition, now Punjab Congress chief Sunil Jakhar and two MLAs of the party have questioned their government's decision of giving jobs to sons of two legislators and urged Chief Minister Amarinder Sigh to roll back the 'ill-advised' move.
Modi brought up the emotive issue of the gurdwara in Kartarpur Sahib, a place sacred to Sikhs as Guru Nanak Dev spent the last years of his life there, and blamed the Congress for country's partition, saying they did it for sake of power.
If everything goes according to plan, a resuscitated SAD could emerge as a central player in Punjab in three years, notes Aditi Phadnis.
Some farmer outfits on Friday threw their weight behind the Central Industrial Security Force (CISF) woman constable who allegedly slapped actor and Bharatiya Janata Party MP-elect Kangana Ranaut, saying the entire sequence leading to the incident needs to be properly investigated.
The resignation also signals a continuing saga of unaddressed concerns of young leaders, once considered close to former Congress president Rahul Gandhi.
The Congress on Monday appointed the party's Punjab unit chief Navjot Sidhu as chairman of the state election committee.