She also hit out at the government for posting retired bureaucrats, who she alleged were its 'yes men', as head of institutions.
The PM's visit comes at a time when West Bengal has been witnessing widespread protests against the contentious Citizenship Act.
The BJP has decided to revamp the organisation by rewarding efficient party workers and leaders and remove several turncoats from local and district levels.
The state BJP unit, which was divided till last week on the question of inducting Roy into the party, has given up its reservations due to the keenness of the leadership, the sources said.
Once a reviled practice in the state, both the parties seem to have endorsed a record number of turncoats this time -- triggering a wave of discontentment among their loyalists.
The Opposition unity to fight the Bharatiya Janata Party seems to have run into rough weather as the Trinamool Congress and the Congress are at daggers drawn over the recent instances of 'poaching' by the Mamata Banerjee-led camp, with the grand old party finding itself in a tight spot.
Dedicating the party's victory to the people of West Bengal, Chief Minister Mamata Banerjee said voters had "paid back" the BJP for its "arrogance of power".
The rupee plunged 20 paise to close at an all-time low of 78.13 against the US dollar on Monday, as a lacklustre trend in domestic equities and stronger greenback overseas weighed on investor sentiments. Forex traders said weak Asian currencies and persistent foreign capital outflows were the other major factors that dragged the local unit down. At the interbank foreign exchange market, the local currency opened at 78.20 and witnessed an intra-day high of 78.02 and a low of 78.29 against the US dollar.
Sporadic incidents of violence were reported on Tuesday in some areas where voting is underway in the third phase of the West Bengal assembly elections, even as the overall situation by and large remained peaceful with 34.71 per cent turnout recorded till 11 am, officials said.
In January this year, permission was denied for the BJP president's chopper to land in Malda district to hold a rally. However, authorities permitted Shah to hold the public meeting at the last minute.
Shah, who was accompanied by BJP national vice-president Mukul Roy, national general secretary Kailash Vijayvargya, was greeted with slogans of 'Amit Shah zindabad', 'Bharat Mata ki Jai' by party workers at Netaji Subhas Chandra Bose International Airport in Kolkata.
Bengal ministers Firhad Hakim and Subrata Mukherjee were taken to the Central Bureau of Investigation office on Monday in connection with the Narada sting operation, officials said.
Gurung vowed to support the TMC in the 2021 Bengal assembly elections.
Banerjee said she would stand by the Dalit community till the end as her caste is "humanity" and she does not believe in differentiation on the grounds of caste and religion.
The news of Shah joining the Cabinet came from Gujarat BJP chief Jitu Vaghani, who tweeted a congratulatory message. "Had a courtesy meeting with our mentor Amit Shah and gave my best wishes to him on his inclusion as a strong member of the Prime Minister Narendra Modi's council of ministers," he tweeted.
Adhikari, the face of the Nandigram movement that catapulated Mamata Bannerjee to power in 2011, sent his resignation letter to the chief minister by fax, which he then forwarded to Governor Jagdeep Dhankhar by e-mail.
The resolution said the state will be called Bangla in three languages -- Bengali, English and Hindi.
The division bench said it deemed it appropriate to stay the special court's order and direct that the "accused person shall be treated to be in judicial custody till further orders".
The West Bengal government said the situation was under control in Baduria, Swarupnagar, Deganga and Basirhat, which had witnessed violence. Prohibitory orders are in force there. No untoward incident was reported.
Naturally, the West Bengal chief minister is not leaving anything to chance, reports Ishita Ayan Dutt.
The BJP locked in an intense rivalry with the TMC since general election vented ire against the state government over the episode, whereas the ruling party directed its criticism at the Governor for rushing to the University which it said is expected to provide justice to the university's vice-chancellor, professors, students, who were beaten up during and the after the minister's visit there.
The BJP, which leads the ruling coalition at the Centre, hit right back, dismissing her allegation as 'baseless' and asserting she will be ousted from power 'democratically' after the assembly elections due next year.
Left high and dry, the BJP has had no option but to go for the overkill with 800 rallies, including 20 by the prime minister. In the process, it may be overplaying its card, observes Amulya Ganguli.
'I did get a ticket, but getting nominated isn't enough.' 'The people in Habibpur, my own party workers, are my opponents.' 'Is it possible to win?'
The Trinamool Congress on Wednesday swept the municipal polls in Bengal, capturing four of seven civic bodies and breaking the 10-year-old hold of the Gorkha Janmukti Morcha in the hills.
The BJP which stormed into Mamata Banerjee's fortress earlier this year by bagging 18 of the 42 Lok Sabha seats faced immense flak when the final NRC in Assam left out Bengali Hindus in large numbers.
'It's a classic conflict between the old and the new BJP. The new BJP is made up of turncoats and the old of veterans who slogged for decades when the BJP barely existed in West Bengal'
Thousands of BJP workers from Kolkata and Howrah began marching towards Nabanna to protest the "worsening" law and order in the state.
Hours after quitting as the MLA of the West Bengal Assembly, Rajib Banerjee on Friday resigned from the primary membership of the Trinamool Congress, intensifying speculation that he might soon switch over to the Bharatiya Janata Party.
The Congress and Left Front on Thursday finalised sharing of 193 seats of the total 294 in West Bengal assembly with the Left parties getting the lion's share of 101 seats.
Criticising the saffron party for "undermining democratic values" in the country, the chief minister said, "Democracy exists in Bengal but it is under threat in several other parts of the country."
In yet another jolt for the Trinamool Congress dispensation, West Bengal forest minister Rajib Banerjee quit the Mamata Banerjee cabinet, joining the growing list of dissenters who have put the ruling camp in a tight spot ahead of the assembly elections.
She is the 21st chief minister of West Bengal and 8th person to hold the office.
Asma Khatoon said it is not biryani that has attracted women to the protest at Shaheen Bagh, while holding that such vilification campaigns will have no effect on the agitation.
Chief Minister Mamata Banerjee said the verdict has quashed a 'false propaganda' aimed at defaming the state government.
Her decision is being seen in the political circle as an outcome of the heightened tussle between the TMC and the BJP in West Bengal.
'February 11, when the results are announced, will hold the key not only to AAP's and the BJP's future, but also to the way the protests against the citizenship law, NRC and NPR evolve,' notes Amulya Ganguli.
Rajnath Singh, Nitin Gadkari, Nirmala Sitharaman, Piyush Goyal, Narendra Singh Tomar, Prakash Javadekar, Ravi Shankar Prasad, Dharmendra Pradhan and Smriti Irani are also likely to join the second Modi government after being its members in its first avatar.
Banerjee had on Tuesday confirmed her presence at the ceremony to be held on May 30.
Five people were killed, including 4 in the firing by Central Industrial Security Force personnel, during the fourth phase of polling