RJD stands for 'Rishwatkhor Jungleraj Dal': JP Nadda
"A majority of the leaders of the INDIA bloc, which includes the RJD, are either in jail or on bail. PM Modi wants to end corruption but the INDIA bloc leaders call for protecting the corrupt. RJD, whose leaders are on bail, means corruption. R stands for 'Rishwatkhori' (bribery), J for 'Jungleraj' and D means 'Daldal' (slough of mud)".
Source: indiatimes.com