Election for 15 Rajya Sabha seats across 3 states are being held today amid concern about cross-voting by Congress and the Samajwadi Party MLAs. Three seats hang in balance -- one each in Uttar Pradesh, Congress-ruled Karnataka and Himachal Pradesh. In Karnataka, the ruling Congress shifted its MLAs to a private hotel on Monday to prevent undue influences -- a situation that has seen multiple re-runs in the chequered politics of the state. State party chief and Deputy Chief Minister DK Shivakumar has denied any possibility of cross-voting by the party MLAs.