Why AAP MPs escaped anti-defection law and how their move affects the party

Seven of the 10 Rajya Sabha MPs of Aam Aadmi Party (AAP) joined BJP on Friday, in a jolt to the party ahead of next year’s election in Punjab, the only state where it is in office. The defection comes at a time when former Delhi CM Arvind Kejriwal has intensified his campaign against BJP after his discharge in the excise policy case.
The MPs who crossed over are: