<p>The Congress leader sent in his resignation to party President Sonia Gandhi, sources close to him said.<br />Siddaramaiah had been touted as one of the key emerging leaders of the Congress after successfully leading the much-publicised state-wide 302 km padyatra against BJP rule.<br />Congress nominee K M Kemparaju lost the Kadur seat to BJP's Y C Vishwanath while in Gulbarga South Ajay Singh, son of former Chief Minister Dharam Singh lost the seat to JD-S' Aruna Patil.</p>
<p>The Congress leader sent in his resignation to party President Sonia Gandhi, sources close to him said.<br />Siddaramaiah had been touted as one of the key emerging leaders of the Congress after successfully leading the much-publicised state-wide 302 km padyatra against BJP rule.<br />Congress nominee K M Kemparaju lost the Kadur seat to BJP's Y C Vishwanath while in Gulbarga South Ajay Singh, son of former Chief Minister Dharam Singh lost the seat to JD-S' Aruna Patil.</p>