The article "The Presidency in the twenty-first century" explores how the role of the U.S. president has evolved and its impact on society. The researchers analyze topics like presidential power growth, the relationship between campaigning and governing, and communication with the public. They also discuss how the president's role in a government that requires cooperation with Congress is affected by public expectations. The Obama administration is compared to President George W. Bush's governing style, which emphasized the unitary executive. The findings raise important questions about the future of America's political system.