Rajdhani used to run via KSK route also for few days in a week earlier...But during last 2 yrs once via Raichur route got electrified Rajdhani was diverted on all days via Raichur and running with End to end EL. Also Via Raichur route is now double baring small stretches, via kurnool route electrification & doubling is in progress in patches will take time at least 3-4 yrs from now depending on fund allocation.