6. Is there a ban on donations from Trade Unions to candidates?
India
"The candidates can raise fund from any source, as there is no restriction under the law on fund-raising by the candidates, nor there is any requirement to maintain and disclose the names and addresses of the persons from whom they are receiving the fund."
Source: Election Commission of India [2015], Background Paper on Political Finance and Law Commissions Recommendations.
No mention of excluding Trade Unions.