Congress leader Rahul Gandhi on Tuesday said the Opposition would support the NDA government on the Lok Sabha Speaker choice if they give the deputy speaker post to the Opposition, PTI reported.

The news agency quoted Rahul as saying that Union minister Rajnath Singh was yet to get back on the Opposition demand.

Earlier on Tuesday morning, PTI reported that the opposition INDIA bloc was unlikely to contest the Lok Sabha Speaker's post and the NDA nominee was likely to be elected unopposed.

The news agency quoted unnamed sources ahead of filing of nomination for the key post.

However, the Opposition has demanded that they be given the choice to pick the deputy speaker, it added.

Defence Minister Rajnath Singh spoke to Congress president Mallikarjun Kharge late on Monday night and sought the support of the opposition on the issue.

Singh, however, gave no assurance to the Opposition on its demand for the deputy speaker's post, the sources said.

There was no deputy speaker in the last tenure.

The NDA candidate for the key parliamentary position will file his nomination on Tuesday.

Besides Kharge, Singh also spoke to DMK leader and Tamil Nadu Chief Minister M Stalin among other opposition leaders in efforts to build a consensus.

The National Democratic Alliance, which enjoys a clear majority in the Lok Sabha, has given little indication about its choice as it weighs its options and looks to deny the opposition any opportunity to mount a political attack.

With the theme of continuity marking much of its choices since it returned to power for a third term, there is a view in a section of NDA leaders that Om Birla, who was the Speaker in the previous Lok Sabha, may be nominated again. However, there was no official word on such a prospect.