LUCKNOW, Jan. 17 -- Four urban assembly constituencies - Lucknow East, Lucknow West, Lucknow North and Lucknow Central - have 2.94 lakh out of Lucknow district's 4.80 lakh unmapped voters who will be served notices under the Special Intensive Revision exercise following the publication of the draft electoral rolls, according to data available with district election officials here. P2...