Family sources say it may have been one factor. But more than that, neither Rahul, Priyanka nor Sonia herself wanted the BJP to use her "foreign origins" to destabilise the government. Says a Sonia aide: "The family didn't want strife across the country on the foreigner issue. It was evident the BJP and the Sangh parivar would not have confined the battle against Sonia to Parliament alone. They would have taken it to the streets."
Sonia herself told Left leaders this before announcing her decision."I don't want to be the cause of a divisive agenda. I want this government to function smoothly for five years."