Union Minister Nitin Gadkari on Saturday exuded confidence that the Bharatiya Janata Party and the National Democratic Alliance would retain power at the Centre and in Maharashtra in polls next year on the basis of development work done since 2014. Speaking at the ABP Network's Ideas of India Summit here, Gadkari, who is the Union Minister for Road Transport and Highways, also said the NDA government had instilled a sense of confidence in the people through its development work and good governance.