ORLANDO, Fla. (AP) - Health and Human Services Secretary Kathleen Sebelius is due to speak at a gathering of AARP members in Orlando.

Sebelius' address Friday is expected to focus on benefits of the country's new health care law.

The Obama administration is seeking to shore up support among seniors who've shown skepticism of the changes.

Seniors generally vote in disproportionately large numbers in midterm elections.

More than 25,000 people over the age of 50 are attending AARP's national gathering.