Immigration minister PhilWoolas told the BBC that secret British intelligence and intelligence from other countries was also being used "in a targeted way".
The election court found that former Labour minister PhilWoolas had made false statements about his Liberal Democrat opponent Elwyn Watkins and invalidated the poll outcome.
Earlier, Immigration Minister PhilWoolas told MPs on the European Scrutiny Committee the "best estimate" of numbers of workers from the 10 newest countries to join the European Union was a prediction of 665, 000 for next month - 550, 000 more than when they joined the EU in May 2004.