But the JD(U)'s return to the NDA fold after four years by walking out of the Grand Alliance less than two years after being in power did not go down well with a section of the party with two MPs including M P Veerendra Kumar openly criticising Kumar's decision.
Kumar, 66, will seek a trust vote during a one-day special session of the Bihar assembly convened at 11 am tomorrow after the governor yesterday asked him to prove his majority on the floor of the House on July 28.
Senior BJP leader Sushil Kumar Modi was also sworn in, and would be the deputy chief minister.
Veerendra Kumar, who is Kerala JD(U) president, expressed "shock" over Kumar's decision and said the state unit would not follow the chief minister into the NDA fold.
He appealed to all JD(U) MPs to "denounce the decision and quit the party."
The deft political manoeuvres by Janata Dal (United) chief Kumar left the opposition stunned as he joined hands with friend-turned-foe-turned-friend BJP. The two parties were in alliance for 17 years until 2013, when Kumar walked out of the NDA fold after Narendra Modi was made the BJP's campaign committee chairman for the 2014 Lok Sabha polls. Modi was later declared the prime ministerial candidate.
However, Kumar, who was seen by the opposition as a possible answer to Modi in 2019 amid shrinking Congress clout, seemed to have accepted the popular thinking that the Modi- wave would continue even after two years.
"Whatever decision we have taken will be in the interest of Bihar and of its people. It will ensure development and justice," Kumar told reporters after the swearing in.
"This is a collective decision. I ensure that our commitment is towards the people of Bihar," he said.
Union Health Minister J P Nadda and BJP leader Anil Jain were present at the brief ceremony where only Kumar and Sushil Modi were sworn in.
Immediately after the swearing in, the JD(U) announced that it will support the BJP-led NDA government in both the Houses of Parliament.
Yadav had refused to step down after the CBI filed corruption charges against him and had also ignored Kumar's advice to explain his conduct. Kumar cited this as the reason to resign and ally with the BJP to become the chief minister for the sixth time.
The sharp reactions from the opposition were predictable.
"People do anything for their selfish motives. There is no principle, no credibility. They can do anything for power," he said.
Modi congratulated Kumar and said he looked forward to working together for Bihar's prosperity.
Nobody from the RJD or the Congress attended the swearing-in ceremony protesting the "denial of chance" to the RJD, the single-largest party in the state Assembly, to form the government.
After taking oath, Sushil Modi said the development process will be back on track in the state with the return of the NDA.
On the RJD's claims that it has the numbers, JD(U) national spokesperson K C Tyagi said, "They should stop making tall claims and if they really have the numbers, let them prove it in the floor test. We have our numbers and we will prove it."
The NDA alliance had submitted a list of 132 MLAs yesterday to the governor. These include 71 of JD(U), BJP 53, RLSP two, LJP two, HAM one and three independents.
Tyagi said the decision of his party to form the grand alliance government in Bihar was "a mistake" and ruled out any possibility of a patch-up with the RJD.
"It was a mistake to forge an alliance with RJD. We had information that to save themselves from CBI cases, they were in touch with the union ministers in Delhi and were planning to topple the Nitish Kumar government", Tyagi said.
"We regret our decision to run the government with such a person (Lalu Prasad) for 20 months. We blame ourselves for committing a mistake of taking their MLA count from 22 to 80," he said.
"My performance perturbed our ally and BJP. Vendetta against me exposes their viciousness", Yadav said in a tweet.
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