Kathmandu, Dec 19 (IANS) Left alliance leaders of the Communist Party of Nepal-United Marxist Leninist (CPN-UML) and Communist Party of Nepal (Maoist Centre) on Tuesday demanded the immediate resignation of Prime Minister Sher Bahadur Deuba.Speaking in the capital, Maoist Centre leader and former Deputy Prime Minister Top Bahadur Rayamajhi said that Deuba should resign on moral grounds respecting the people's mandate as the leftist alliance mustered around two-thirds majority in the parliamentary and provincial elections, the Kathmandu Post reported.Saying that economic prosperity is the need of the hour, Rayamajhi demanded coordination, unity and cooperation among all the political parties.He suggested that the parties should find a middle path to take the national assembly ordinance ahead rather than by majority system or single transferable voting system."The issue should be resolved by understanding rather than single transferable voting system or majority system," Rayamajhi said.On the occasion, UML leader Mahesh Basnet said: "Prime Minister Deuba should not stay in power for long, he should resign at the earliest.""People want political stability and development in the country," Basnet said, adding, "We felt that conspiracies are being hatched to stop the left alliance from carrying out development works."He also suggested to the Nepali Congress to discuss its weaknesses rather than wasting time in pointing fingers at others.Former Minister for Industry Basnet claimed that the new government would be formed under the leadership of CPN-UML Chairman K.P. Sharma Oli by January 21.--IANSsoni/bg