Being elected gives the president a mandate to implement campaign policies.
A president with a larger majority has a stronger mandate to carry out policies.
Barack Obama had a strong mandate with 52.9% of the popular vote in 2008.
George W. Bush had a smaller mandate with 47.9% of the popular vote, less than his opponent.
limtis to electoral mandate
An electoral mandate is limited because Congress can block the president’s legislative proposals.
Despite winning a large victory in 2008, Obama's legislation was blocked after the 2010 midterms when the Republican Party gained a majority in the House of Representatives.