Public confidence in President Obama's leadership has declined sharply over the summer, amid intensifying opposition to healthcare reform that threatens to undercut his attempt to enact major changes to the system, according to a new Washington Post-ABC News poll. Among all Americans, 49% now express confidence that Obama will make the right decisions for the country, down from 60% at the 100-day mark in his presidency. Forty-nine percent now say they think he will be able to spearhead significant improvements in the system, down nearly 20 percentage points from before he took office.