India's Congress hits rock bottom, but no change at the top

* Party in crisis after worst election result in Uttar Pradesh

* No overt challenge to leadership role of party heir

* Rahul Gandhi seen by some experts as a liability

* Congress faces uphill challenge at 2019 election

* India's electoral map: http://tmsnrt.rs/1TOkZRF

By Douglas Busvine

NEW DELHI, March 15 (Reuters) - Many political parties faring as poorly as the Indian National Congress in a bellwether state election would ditch key leaders, if they did not go of their own accord.

Not so Rahul Gandhi, scion of India's most famous political dynasty, who remains in charge after his attempts to connect with voters in the country's most populous state of Uttar Pradesh ended in failure.

Congress support in a state that is home to one in six Indians fell to 6 percent and it won seven of 403 seats in the state assembly, marking a new low for a party that ruled the world's largest democracy for two-thirds of its 70 year history.

Filling the void is Prime Minister Narendra Modi and his ruling Bharatiya Janata Party (BJP), which won the biggest majority in the state for any party since 1977. It sets him on a path to re-election in a 2019 national ballot.

Gandhi, 46, is not yet president of Congress, but with his mother, Sonia, abroad for medical treatment, he is already its de facto leader. He spearheaded the party's 2014 general election campaign that also led to humiliating defeat.

In the wake of the Uttar Pradesh results at the weekend, senior party members have not challenged Gandhi, even as they concede the need for action.

"There is no reason for despondency," Abhishek Manu Singhvi, a senior Congress lawmaker, told Reuters. "There is a need for surgical, structural changes and I have no doubt they will happen."

Not everyone is so sanguine.

"There is no leader today with a pan-India acceptability who can take on Modi & the BJP in 2019," tweeted Omar Abdullah, former chief minister of the northern state of Jammu and Kashmir whose party is allied to Congress.

"At this rate we might as well forget 2019 & start planning/hoping for 2024," he said, referring to the dates of India's next general elections.

"UNMITIGATED LIABILITY"

Gandhi's campaign in Uttar Pradesh never gained traction: people who came to see him at outdoor meetings stole the benches put out by party workers for them to sit on.

His hiring of Prashant Kishor, the backroom strategist who helped chart Modi's rise to national power, did not pay off. And mother Sonia took a nasty fall after fainting on a road show in Varanasi, Modi's constituency in eastern Uttar Pradesh.