In a counter offensive after 13 MLAs resigned on Saturday dealing a blow to the 13-month-old government, a delegation of Congress leaders met Speaker K R Ramesh Kumar and submitted the petition seeking, under the anti-defection law, disqualification of the rebel legislators in line with the decision taken at a meeting of the Congress Legislature Party on Tuesday.
Here are 8 factors to watch out for, says psephologist Yogendra Yadav.
'The results show that he is the best person to manage individuals in the party.'
A six-time member of Parliament, Kumar had climbed the political ladder steadily from being an Rashtriya Swayamsevak Sangh worker to be the Union minister in his thirties.
This has been the CM's shortest stint in power -- three days.
The BJP won 12 of 15 seats on which bypolls were held. Congress could win only two.
After Rahul's Bharat Jodo Yatra began criss-crossing the Hindi heartland, BJP leaders have revived their attacks on 'dynasty politics' and 'family rule' in the Congress, points out N Sathiya Moorthy.
The 75-year-old Lingayat leader broke his own record of the most short-lived head of government in Karnataka.
The BJP will need to win at least six seats to remain in power.
The Election Commission on Thursday said it will take 'immediate consequential steps' on bypolls to 15 Karnataka assembly seats after studying the order of the Supreme Court.
Former Karnataka chief minister H d Kumaraswamy's entry into the Chikkaballapur constituency will make the going tough for his opponent, and Union minister and former chief minister Veerappa Moily, who had won the 2009 election from here comfortably, reports Vicky Nanjappa.
The Congress may stand a better chance in the assembly polls if it followed the 'Himachal model', suggests N Sathiya Moorthy.
While Rahul Gandhi led Congress has a pan Indian presence, Naidu described regional leaders, including himself, West Bengal Chief Minister Mamata Banerjee, Stalin and Deve Gowda as strong leaders in their respective states, who are coming together against the BJP.
The state government has plunged into a crisis after 14 dissident MLAs -- 11 from the Congress and three from the Janaat Dal-Secular -- resigned and two independents withdrew support.
What does Siddaramaiah need to do if he has to continue as the chief minister of Karnataka? He has to win the Congress 20 seats, and sources within the party tell Rediff.com, and that he is under a lot of pressure. Vicky Nanjappa reports.
Interestingly, so far Deve Gowda's JD-S is not the target of the attack by the BJP. Come mid-May, he hopes he will once again play the role he has played before.
With the family patriarch ageing, his successor H D Kumaraswamy not keeping well, and palpable anger against his other son H D Revanna in the family pocket borough of Holenarsipura, the clan is seemingly in decline.
The court struck down the portion of the Speaker's order by which the legislators were disqualified till the end of the 15th Karnataka assembly.
Yeddyurappa would take the oath alone as the chief minister and once the majority is proved on the floor of the assembly, cabinet members would be inducted.
The ruling coalition had held out the threat of using the Whip against the wayward MLAs, citing the disqualification provision under the anti-defection law.
Siddaramaiah said he was not unhappy about the Congress-JD(S) coalition as was being projected, and there was no doubt about the stability of the government.
With the two latest resignations, 16 MLAs -- 13 from the Congress and 3 from the JD-S -- have quit while two Independent MLAs -- H Nagesh and R Shanker -- have already withdrawn support.
CM Siddaramaiah has called legislature session on September 23 to discuss the SC's direction.
Roopa has now been posted as commissioner for road safety & traffic.
'The BJP was looking at one or two disgruntled guys to see whether it can destabilise the government.' 'When the BJP does not win a state, it uses these back hand methods.'
All eyes are now on Kumar who has to take a call on the resignations tendered by 13 MLAs of the Congress and the JD-S from the assembly.
Resisting growing clamour, the state government decided to stick to its decision not to refer the case to the CBI.
The incident occurred late Saturday night at the resort where the Congress MLAs are hunkered down since Friday in a move to keep the flock together against alleged bid to topple the ruling coalition by BJP, according to Congress sources.
The apex court, however, made it clear that the swearing-in and the government formation in the state would be subject to the final outcome of the case before it.
Yediyurappa said he would decide on members to be inducted into the ministry after consulting party president Amit Shah.
The apex court made it clear that it would deal with the constitutionality of the Governor's letter inviting Yeddyurappa to form the government later.
"They call themselves the champions of speech and expression. But deny the same for the people of Kerala."
Karnataka government on Saturday moved the Supreme court seeking a review of its order directing the state to release Cauvery water to Tamil Nadu even as it faced strident calls from opposition parties not to release the water "at any cost".
With her various overtures and right noises at the right time, Mamata is once again trying to reshape her image from being a regional leader to one with national appeal and acceptability. After all, the charge of building a Federal Front may also bring to the fore Mamata's chances to become prime minister in 2019.
'The BJP is no longer the BJP. It has become the Bharatiya Janata Poaching Party.' 'They talk of black money and here they are ready to pay Rs 100 crore to MLAs.'
'... in the form of possible payments to MLAs and horse-trading for the BJP to win.'
From President Pranab Mukherjee's son Abhijit to Rahul and Varun Gandhi, at least 50 parliamentary constituencies will be contested by 'sons and daughters' of politicians of various parties during the upcoming Lok Sabha polls.
'The question of survival depends on several factors because this country is divided vertically and horizontally.' 'There will always be demands and ups and downs.'
'Then all the usual troubles will break out.'
'Voters did not turn up in large numbers in Bangalore.' 'If more voters of Bangalore had come to vote, we would definitely have reached the magic figure.'