Karlan, Appel, Duflo and Banerjee tackle that question through randomized control trials (RCTs).
But getting them through the legislature without Ms. Banerjee's support is likely to be even trickier.
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Banerjee also realises that she will have a tough job at hand as chief minister.
Banerjee herself is a mercurial leader and not known to be a great administrator.
Bandyopadhyay, who is now a TMC supporter, says they see Banerjee as an alternative.
For example, few in West Bengal can spell out what the energetic Ms Banerjee stands for.
With Ms Banerjee looking a diminished figure, Mrs Gandhi has come out on top for now.
It had the effect of cornering Mrs Gandhi into endorsing Ms Banerjee's foe, Mr Mukherjee.
Ms. Banerjee told Mr. Singh over the phone Friday that her party wouldn't support the move.
Dilip Banerjee is integrating disaster relief into the long-term management of local needs and resources.
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"Our ministers will go to New Delhi on Friday and submit their resignations, " Ms. Banerjee said Tuesday.
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Instead, Ms Banerjee objected to both Mr Mukherjee and the other (lesser) candidate, Hamid Ansari, India's vice-president.
West Bengal Chief Minister Mamata Banerjee had ordered Mr Sen's arrest after he went missing earlier this month.
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Congress even faced opposition from parties that it relies on to govern, including from Ms. Banerjee's Trinamool Congress.
Biswajit Banerjee, the divisional forest officer, admits that the rocky soil is of little use for planting trees.
Mr Banerjee is the first arbiter of their fate and it is not clear how he will rule.
Similarly, the Congress Party is hoping to expand its base in the state, which Banerjee is loath to allow.
Jon Lewis and Vikram Banerjee stayed together to seal the draw on 243-7.
Since then, parties from across the political spectrum, including Ms. Banerjee's, have protested.
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Complicating things, however, is the ambiguous attitude towards business of Ms Banerjee herself.
Mr Kalam has ruled himself out, leaving Ms Banerjee with no credible candidate.
However, within hours of his announcement, Mamata Banerjee, the chief of Mr Trivedi's Trinamul Congress party, rejected the fare increase.
Spinners Chris Taylor (4-52) and Vikram Banerjee (3-103) did the damage as the last seven wickets fell for only 40.
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West Bengal Chief Minister Mamata Banerjee, of Trinamool, asked why Congress had not objected while Mr Basu was in residence.
Ms Banerjee was on her way to the planning commission office in Delhi with Mr Mitra when SFI activists accosted them.
Banerjee is acutely aware of the vested interests in her party and her allies, according to those who know her well.
Pradeep Bhattacharya called for "coordination between the two parties" but added that Ms Banerjee "hasn't yet paid any heed to it".
While Ms Banerjee was escorted safely to the commission office by policewomen, the protesters blocked Mr Mitra's way and pushed him around.
Ms Banerjee refused to allow a special economic zone offering tax relief.
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