The BJP is leaning on Yogi's 'batenge to katenge' theme to weave a unifying narrative that transcends caste and communal lines.
Here are some of the big political leaders' who await their fate on Monday.
Shatrughan Sinha won't attend, citing 'important personal engagements.' Will L K Advani be present? M I Khan reports on a swearing-in ceremony the likes of which Patna may not have seen before.
Akhilesh said that the defeat of the Dalit candidate would cement his party's relations with Mayawati-led BSP.
The outcome of the polls to the Rajya Sabha is likely to have an impact in the politically crucial state just ahead of the general elections in the country.
"NCP president Sharad Pawar, Loktantrik Janata Dal president Sharad Yadav, DMK chief MK Stalin, Bihar's former deputy chief minister and RJD leader Tejashwi Yadav, SP president Akhilesh Yadav, BSP chief Mayawati and Delhi chief minister Arvind Kejriwal among other opposition leaders will attend the oath-taking ceremony in Rajasthan and Madhya Pradesh on December 17," said well-placed sources.
In the second phase on April 18, 97 seats,spread across 13 states and one Union Territory, will go to the polls.
The party, however, has retained state president Naresh Uttam.
People had also started gathering at Mukhtar Ansari's residence in Ghazipur and there was a large deployment of security personnel around the house.
Bypolls to 10 assembly seats in Uttar Pradesh will be a litmus test for the Indian National Developmental Inclusive Alliance (INDIA)'s unity after the group's success in the recent Lok Sabha polls when they won more than 40 seats, significantly contributing to the Bharatiya Janata Party's failure to win a simple majority in parliament.
Releasing the manifesto titled 'Badlav Ka Sankalp' (commitment to change) in the presence of All India Congress Committee (AICC) general secretary Randeep Singh Surjewala and other Mahagathbandhan leaders, Tejashwi Yadav said their government, if elected, would first approve the process for appointments on about 10 lakh jobs in the government.
Bahujan Samaj Party supremo Mayawati and Samajwadi Party chief Akhilesh Yadav, who have extended support to the Congress to form the government in the state, were not present.
With several political stalwarts of Uttar Pradesh no longer on the scene, it will be keenly watched how their children lead at the hustings this time without their formidable presence.
The Congress party is thinking of ways to counter the BJP in Lok Sabha constituencies is it unlikely to win, reports Renu Mittal.
Opposition leaders on Saturday lauded the Congress for its victory in Karnataka and thanked the people of the state, saying that this win has showed that 'Modi is not invincible'.
Nath had said in Bhopal, "Lot of industries are set up in which people from other states, like Uttar Pradesh and Bihar, come to work. I do not want to criticise them, but the youth of Madhya Pradesh are deprived (of jobs)."
UP and Bihar contributed 105 seats to the BJP's tally in 2014. It has now lost 8 Lok Sabha by-polls in the last four years, including three successive losses in UP and two seats in Rajasthan.
Opposition parties on Sunday lashed out at the Bharatiya Janata Party after Nationalist Congress Party leader Ajit Pawar and eight others were inducted into the Eknath Shinde-led Maharashtra government, saying the ruling party's 'washing machine' has resumed its operation to clean tainted leaders and it was an 'ED-facilitated power grab'.
Home to several Yadav family bastions, Phase III of the Uttar Pradesh Assembly Elections is especially crucial for the Samajwadi Party.
His son and party chief Akhilesh Yadav lit the funeral pyre. The former Uttar Pradesh CM had died aged 82 at a private hospital in Haryana's Gurugram on Monday.
BJP sources suggest that the upcoming elections will likely revolve around the renewed enthusiasm for the temple unless another theme with religious and nationalist undertones emerges.
On chances of taking uncle Shivpal Yadav's Pragatisheel Samajwadi Party Lohia along in the polls, he said, "I dont have any problem in this. He and his men will be given due honour".
According to insiders, their lack of enthusiasm is showing on the ground. There is nothing to suggest that their enthusiasm will return in the final four phases of polling, observes N Sathiya Moorthy.
Voting for the seventh and final round will be held on March 7 for Varanasi and its eight adjoining districts.
A R Rahman performed on the second day of the three-day bash to celebrate the 76th birthday of SP patriarch Mulayam Singh Yadav.
SP president Akhilesh Yadav and ally RLD chief Jayant Chaudhary are unlikely to participate in the Yatra due to "preoccupation" with their party programmes, their party leaders said.
Among the bigwigs are Union ministers Amit Shah (Gandhinagar), Jyotiraditya Scindia (Guna), Mansukh Mandaviya (Porbandar), Parshottam Rupala (Rajkot), Pralhad Joshi (Dharwad) and SP Singh Baghel (Agra).
Prime Minister Narendra Modi on Saturday attended the pre-wedding ceremony of Samajwadi Party supremo Mulayam Singh Yadav's grandnephew with Rashtriya Janata Dal chief Lalu Yadav's daughter, an event which saw the most powerful political families of Uttar Pradesh and Bihar coming together.
However, the RLD leader gave a terse response. 'Invite those +700 farmer families which you have destroyed, not me,' he tweeted in Hindi.
Officials said most of the preparations are complete and the counting will start at 8 am on Saturday.
Some parties, including the Congress, also demanded immediate sacking of Union Minister of State for Home Ajay Kumar Mishra, following Samyukt Kisan Morcha's allegation that his son was travelling in one of the vehicles involved in the incident.
The Congress and the Left parties have not only extended support to the Samajwadi Party candidate but are also campaigning for him, in accordance with the spirit of the new opposition togetherness ahead of next year's general election.
The opposition parties snatched the high-profile Kairana LS seat in from BJP with a united force.
Opposition parties now recognise that the king on one side of the chessboard, Prime Minister Narendra Modi, is ensconced, and unlikely to be shaken, although on his side there are no identifiable kings, queens, rooks, bishops or knights.
Kumar, a Dalit, as its candidate for president against NDA's nominee Ram Nath Kovind.
All India Congress Committee general secretary in-charge of Uttar Pradesh Ghulam Nabi Azad said the party would not react immediately and would come out with a detailed reaction in Lucknow on Sunday.
'To summarise, PM Modi's failures in the last nine years can be categorised under 'durniti' (bad policies), 'anyay' (injustice) and - perhaps most importantly - 'badniyat' (ill intention)'
'They (BJP) can claim of winning even 82 seats, despite the fact that Uttar Pradesh has only 80 seats'
Poonam Sinha is likely to file nomination on April 18.
Angry protesters allegedly forced the two vehicles to stop and set them on fire.