Cracking the whip, the Bharatiya Janata Party on Wednesday summarily expelled eight of its MPs who cross-voted or abstained during the trust vote as shocked opposition parties got down to fix errant MPs whose actions helped the United Progressive Alliance government survive.

Biju Janata Dal, a constituent in the BJP-led National Democratic Alliance, expelled Harihar Swain dubbing him as a "betrayer" while Telugu Desam Party MP M Jagannatham also faced similar action for defying party whip.

Marumalarchi Dravida Munnetra Kazhagam sources said in Chennai that the party will be seeking the disqualification of two of its MPS -- L Ganesan and Gingee Ramachandran -- for voting for the government.

Stung by his fellow MPs switching loyalties, BJP's prime ministerial candidate L K Advani said it sparked so much outrage in the party that it did not take more than five minutes to proceed against the MPs.

The eight members were among 24 opposition MPs who either voted for the government or abstained or remained absent.

"If there was no cross-voting, the government would have lost the trust vote," Advani told reporters a day after the Congress-led UPA government sailed through the confidence vote.

Wasting no time, Advani said that action was also being taken to seek the disqualification of the eight MPs from the Lok Sabha for violation of party whip.

The  MPs expelled are Brijbhushan Sharan Singh (Balrampur), Manjunath (Dharwad), Chandrabhan Singh (Damoh), H T Sangliana (Bangalore north), Manorama Madhwaraj (Udipi), Haribhav Madhav (Jalgaon), Babubhai Katara (Dohad) and SomabhaiPatel (Surendranagar).

The names of the eight MPs, half of whom who abstained were announced by BJP president Rajnath Singh at a news conference.