Democratic incumbent Sen. Mary Landrieu said she is "not backing up" from President Barack Obama and defended his health care law in Louisiana's latest Senate race debate.

The three-term senator squared off Monday night with long-shot Republican candidate Rob Maness, while the race's main GOP contender, Bill Cassidy, skipped the TV debate.

Landrieu defended her record and stuck to her campaign theme that she makes decisions based on how they will impact Louisiana, not whether the policies are supported by the Democratic president.

While she and Maness sparred on issues including immigration and health care, Landrieu spent much of her time attacking Cassidy for avoiding the event altogether.

With a week before the Nov. 4 election, one more debate is scheduled, on Wednesday. All three candidates are slated to attend.