NEW DELHI: The AAP , which made a stunning debut in the Delhi assembly polls, is likely to impact the Congress 's fortunes the most in the upcoming Lok Sabha elections, a survey by ABP News-Nielsen in Delhi and Mumbai said Monday.According to the snap poll, in Mumbai and Thane the Congress-Nationalist Congress Party combine is likely to get three seats in the 2014 general elections compared to eight seats in 2009.The Bharatiya Janata Party (BJP) and Shiv Sena are predicted to get six seats compared to a single seat in 2009.The Aam Aadmi Party (AAP) is likely to bag only one seat, a release said here Monday.As per the ABP News-Nielsen snap poll, in Delhi the Arvind Kejriwal-led party is likely to wipe out the Congress and bag six seats.The Congress might not get a single seat compared to its clean sweep of all seven seats in the 2009 polls.However, BJP's Narendra Modi scored over Kejriwal as the most preferred prime ministerial candidate.According to the snap poll, Kejriwal's appeal seems restricted to Delhi as Modi leads in Mumbai and the national capital region (NCR) with an overall 48 percent vote.Kejriwal got 31 percent of the vote, while Congress vice president Rahul Gandhi stands third in the race for prime minister with an overall 16 percent vote.The BJP is predicted to get two seats in NCR (Haryana -- Gurgaon and Faridabad ) and is likely to hold its seats or gain, barring in Delhi.The snap poll also said that within the NCR (Uttar Pradesh -- Ghaziabad and Gautam Buddha Nagar ), the AAP and the BJP were likely to get one seat each in 2014.The field work for the ABP News-Nielsen snap poll was done in 21 parliamentary constituencies in Delhi, NCR and Mumbai region between Jan 10-12 with 2,585 respondents, the release said.