Prime Minister Narendra Modi on Tuesday, addressing a gathering of party workers, launched a stinging attack on Opposition parties, contending they can only "guarantee" corruption, and accused them of being involved in various scams. "If you want welfare of Karunanidhi family, then vote for DMK. If you want the welfare of K Chandrashekhar Rao's daughter, then vote for BRS. But if people want the welfare of your sons and daughters and grandchildren, then vote for BJP," PM Modi said.