Chief Minister B.S. Yeddyurappa resigned on Saturday before facing a crucial trust vote in the Karnataka Assembly with numbers stacked against the BJP in the newly elected House, bringing an end to a political thriller that began after May 12 elections threw up a hung verdict.

In an emotional speech in the Assembly, Yeddyurappa said the BJP didn't get the numbers needed to prove majority in the House.

"I will lose nothing if I lose power, my life is for the people," he said.

In his 15-minute speech, the 75-year-old BJP leader said there was no way he could have served the people of Karnataka as the Congress was not even allowing its MLAs to speak to their family members.

"If only people would have given us 113 seats instead of 104, we would have made this state a paradise. But I will fight for the state till my last breath. We will get 28 out of 28 seats in Lok Sabha and I will win 150 Assembly seats for Narendra Modi (in the next Assembly elections)," Yeddyurapa said.

He then he would resign as the Chief Minister of Karnataka and after the speech, drove to the Raj Bhavan to submit his resignation to Governor Vajubhai Vala.

The resignation comes two days after he took oath as the 15th Chief Minister of the state.

The May 12 election across the state in 222 constituencies of the 225-member assembly, including one nominated, threw up a hung House, with no party securing majority. Polls in two constituencies were deferred.

Of the 222 seats, the BJP won 104, the Congress 78, the Janata Dal-Secular, 37 and one each was bagged by the Bahujan Samaj Party, the Karnataka Pragnyavantha Janatha Party and an Independent.

As JD-S leader H.D. Kumaraswamy won from both Channapatna and Ramanagaram segments, the party's effective strength in the House was 36.

As the single largest party, the BJP was short of crossing the halfway mark.

Yeddyurappa required the 111 halfway mark to win the motion or one more than the half of the members present at the time of the floor test was conducted in the House with an effective strength of 221.

Though the Governor had directed Yeddyurappa to seek a vote of confidence on the floor of the House within 15 days from the date of assumption of office as the Chief Minister (May 17), a three-judge bench of the Supreme Court ordered the floor test on Saturday, rejecting his plea for a week's time to prove his majority.