An informal alliance had existed prior to the elections as several of the constituent parties had developed seat-sharing agreements in many states. After the election the results of negotiations between parties were announced. The UPA government's policies were initially guided by a common minimum programme that the alliance hammered out with consultations with Jyoti Basu and Harkishan Singh Surjeet of the 59-member Left Front.[17] Hence, government policies were generally perceived as centre-left, reflecting the centrist policies of the INC.
During the tenure of Jharkhand Chief Minister Madhu Koda, the constituents of the UPA were, by mutual consent, supporting his government.[18]
On 22 July 2008, the UPA survived a vote of confidence in the parliament brought on by the Left Front withdrawing their support in protest at the India–United States Civil Nuclear Agreement.[19] The Congress party and its leaders along with then Samajwadi Party leader Amar Singh were accused of a "cash for vote" scam as part of the cash-for-votes scandal, in which they were accused of buying votes in Lok Sabha to save the government.[20][21][22] During UPA I, the economy saw steady economic growth and many people (100 million+) escaped poverty.
2009–2014
In the 2009 Lok Sabha election, the UPA won 262 seats, of which the INC accounted for 206. During UPA II, the alliance won election in Maharashtra, Haryana and Arunachal Pradesh. However, there were several allegations of scams during its tenure that impacted UPA's image nationwide and the approval rating for the government fell. In addition, many members left for YSRCP. This started a domino effect with members leaving to form their own parties and parties such as DMK leaving the alliance altogether. During this time UPA struggled with state election and leadership stability. The alliance suffered a defeat in 2014 Indian general election as it won only 60 seats. In addition, UPA won only one state election and got wiped out from Andhra Pradesh where they previously had 150+ MLAs.
2015–2019
From 2014 to 2017, UPA won only 3 state elections. This was blamed on the alliance's failed leadership and weakness compared to the NDA. In addition the party lost power in states where they had once won state elections as in Bihar. In 2017 the alliance lost again. In 2018 UPA had a phenomenal comeback in the state elections as the party won important in Karnataka, Rajasthan and others. More parties joined the alliance and it was stronger than ever.
In 2019 Indian general election the UPA won only 91 seats in the general election and INC won 52 seats, thus failed to secure 10% seats required for the leader of opposition post. The alliance lost another state to BJP with the party winning by-polls and pushing the UPA into the minority.
Since 2020, more parties joined the alliance. The alliance lost the Bihar election that everyone expected it to win but in 2022, ruling party JD(U) left National Democratic Alliance and rejoined Mahagathbandhan to form government in Bihar.
In addition UPA only won 1 out of the 5 state elections in 2021. However the alliance made significant gain in a number of MLA races. MVA lost control of Maharashtra due to crisis and split in Shiv Sena. Moreover, UPA lost in Gujarat assembly elections however, it won the state election in Himachal Pradesh.
In 2023, UPA again failed in winning elections in the North-East but won the assembly in the very important state of Karnataka.
The winter session of parliament in October 2008 came under intense criticism from the Left parties and the BJP to demand a full-fledged winter session instead of what was seen as the UPA to having "scuttled the voice of Parliament" by bringing down the sittings to a record low of 30 days in the year. The tensions between the UPA and the opposition parties became evident at an all-party meeting convened by Lok Sabha speaker Somnath Chatterjee when the leader of opposition, L. K. Advani questioned the status, timing and schedule of the current session of parliament.[27]
M. Karunanidhi had said he felt "let down" by the "lukewarm" response of the centre and had demanded amendments in the resolution on Sri Lanka.[citation needed]
The second one was "establishment of a credible and independent international commission of investigation in a time-bound manner into the allegations of war crimes, crimes against humanity, violations of international International human rights law, violations of international humanitarian law and crime of genocide against the Tamils". Karunanidhi said Parliament should adopt the resolution incorporating these two amendments.[28]
The year 2008 was a darkest part of the UPA, due to the failure to prevent several terrorist attacks. The UPA had repealed the Prevention of Terrorism Act, 2002 in 2004, which softened the stand on acts of terrorism and reduced powers for the law enforcement while dealing with acts of terrorism.[29] The weakened legislation, along with intelligence failures, resulted in bombings in 2008 across cities like Jaipur, Bangalore, Ahmedabad and Delhi, led by the Indian Mujahideen, as well as 2006 Mumbai train bombings and 2006 Varanasi bombings.[30] During the 2008 Mumbai attacks, when 10 Pakistani terrorists from the banned terror outfit Lashkar-e-Taiba came from the sea route and seized the city for 3 days, the UPA Government faced immense criticism from citizens and leaders of opposition for intelligence failures as well as not being able to provide quick transportation for NSG commandos.[31][32] Furthermore, Congress leader Digvijaya Singh, was criticized for launching a book which mentioned that the Rashtriya Swayamsevak Sangh was somehow linked to the attack, despite credible evidence and confessions from Ajmal Kasab, the only gunman who was captured by Mumbai Police.[33][34] The 2008 attacks in Mumbai also led to resignation of several leaders in the UPA, both in Central and Maharashtra State Government, on the grounds of moral responsibility as well as for making insensitive statements.[35][36][37]
The UPA was criticised for its alleged involvement scams such as the Commonwealth Games Scam of 2010, the 2G spectrum case, and the Indian coal allocation scam. Apart from the above-mentioned scams, the UPA has been under intense fire for the alleged doles handed out to the son-in-law of the Gandhi family, Robert Vadra, by UPA-run state governments.[38]
The UPA Government has been severely condemned for mishandling the aftermath of the 2012 Delhi gang rape case. As per several media houses, the Government had failed to act positively or give credible assurances to the protesters and instead used police force, lathi-charging, pushing the media out of the scene, and shutting down metro rail stations.[39] In the aftermath of the incident, while the Government passed an amendment of the current laws against rape and sexual assault, which ensured stricter punishments for rape convicts, the amendment was criticized and labeled as an eyewash, as the changes in the laws failed to serve as a deterrent to rising incidents of rape.[40] Furthermore, several key suggestions were ignored, including the criminalisation of marital rape and trying military personnel accused of sexual offences under criminal law, which was severely condemned by several women's safety activists.[41] The UPA also faced condemnation for inaction against political leaders such as Digvijaya Singh and Mulayam Singh Yadav for their comments which promoted misogyny and anti-women views, as well as insensitivity towards rape victims. [42][43][44]
The UPA, in its opposition, faced immense criticism by the NDA Government for banking frauds, mostly by giving unsecured loans to fugitive businessmen Vijay Mallya, Nirav Modi and Mehul Choksi during the tenure of then Prime Minister Manmohan Singh.[46][47] Mallya owes money to a consortium of 17 banks, from whom he took loan to fund his now closed Kingfisher Airlines, and Modi owes money to the Punjab National Bank.[48][49] While Mallya and Modi have been apprehended in the Great Britain and awaiting extradition, Choksi acquired citizenship of Antigua and Barbuda, with a warrant against him to extradite to India for the bank fraud.[50][51][52]