JD(U) president Sharad Yadav ruled out his party's support to NDA even if L K Advani is projected as the Prime Ministerial candidate by BJP, saying "once a divorce takes place, it is very difficult to reunite".
He said the effort is to stop both NDA and UPA from forming the government.
"We are making efforts to see that neither of them (NDA or UPA) form the government but the government of third front is formed," he told reporters here.
Targeting UPA, he said its "failure on all issues" had led to the emergence of "challenge" from BJP
"It is true that the failure of Congress government and the fragmentation in Janta Dal...These two were responsible for the challenge which came up from BJP," Yadav said.
He also hit out at both Congress and BJP for giving tickets to cricketers and filmstars, questioning what they would do in Parliament as "most of them never even talk and just sit".