NEW DELHI: The leaders of India's ruling Congress party addressed a rare gathering of hundreds of thousands of supporters on Sunday, attempting to reclaim lost political ground after being battered by a series of corruption scandals.  

Accusing the opposition of spreading misinformation regarding policy initiatives taken by United Progressive Alliance (UPA),Prime Minister Manmohan Singh said that reform measures, including FDI in retail, will benefit the common man and create more jobs.

Addressing the rally at the Ramlila ground  here, he said Congress party and the government were committed to create a prosperous India but the people have to travel a long distance to achieve that goal.

"If we want to bring some changes in our policies for the benefit of the country, we will definitely do so," he said.

Defending the opening up of multi-brand retail to foreign investment, he said suggestions that this will harm farmers were "wrong".

The "difference" between Congress and those opposing them was that his party and the government wanted to create a change in the society, he said.

"We have to take difficult decisions to achieve this... Those opposing us will be proved wrong. Eight crore people have benefited from the Mahatma Gandhi National Rural Employment Guarantee Act (MNREGA). Twelve crore children have benefited from mid-day meal programme. Prosperity should reach the common man.

"We need economic reforms to create more jobs... The people are being misled about recent government decisions... We have done a lot of work in the last eight years," Singh said.

Elaborating on his defence of FDI, he said Congress and the government believes that FDI in retail is in the interest of farmers.

"All will be benefited. Farmers will get the right price for their produce. New employment opportunities will emerge. It is wrong that FDI in retail will affect farmers. Such a suggestion is aimed at misleading the country," he said.

The rally comes as a two key Indian states head to the polls and as the party begins preparations for national elections to be held in 2014.

Sonia Gandhi, the Italian-born leader of the Congress party, defended a series of politically unpopular economic reform measures launched by the government over the last few months.

These include opening India's retail sector to foreign investment and cutting fuel subsidies.

In her fiery speech, Gandhi also addressed the corruption allegations her party and its allies have faced over the last two years.    ''I admit, corruption is a cancer, it is a disease,'' she said. ''We will continue to fight this disease.''

Several government ministers are facing corruption charges stemming from scandals over the hosting of the 2010 Commonwealth Games, the sale of cellphone spectrum and allocation of coal fields that auditors said lost the country of billions of dollars.

More recently, anti-corruption crusader Arvind Kejriwal has alleged that Gandhi's businessman son-in-law Robert Vadra made millions of rupees off of shady real estate deals and a senior minister embezzled millions of rupees meant for a charity that helps the disabled.

None of Kejriwal's allegations have led to charges or been independently verified, but they have added to the government's graft woes.

The opposition Bharatiya Janata Party has used the corruption scandals to score political points but on Sunday Gandhi hit back.    ''Those who dig a pit for others to fall should know that a well is waiting for them to fall into,'' she said, without naming the BJP directly.

BJP President Nitin Gadkari is also battling a slew of graft allegations from Kejriwal's group.

Prime Minister Manmohan Singh and Gandhi's son and Congress star campaigner Rahul Gandhi also addressed the rally and defended the party's recent economic reforms.

Rahul, a scion of the politically powerful Nehru-Gandhi family, is the son and grandson of two prime ministers.

He is presumed to be a prime minister-in-waiting, but so far has held no government positions. His public appearances are rare and carefully chosen.

The political gathering came as the northern state of Himachal Pradesh began voting Sunday. Campaigning is also in full swing in Gujarat in western India where elections will take place in December.

–The Times of India contributed to the story