Former Congress President Sonia Gandhi will campaign in Telangana on November 23, reported news agency ANI. The Congress leader will address a rally in Warangal during the campaign, the report added. Similarly, Congress president Rahul Gandhi will campaign in Telangana`s Mahbubnagar and Khammam on November 28, 29, the report added. Telangana Assembly polls will be held on December 7. Telangana Chief Electoral Officer Rajat Kumar on Saturday said that the filing of nominations will start from November 12. Telangana will go to polls on December 7. Telangana Chief Minister K Chandrashekar Rao dissolved the Assembly on September 6 and called for early state elections.