Republican presidential candidate Nikki Haley said Sunday she is "not surprised at all" that so much of the GOP congressional base is backing former President Trump.

Why it matters: The former UN ambassador remains far behind Trump in endorsements, with the former president already having secured a majority of Republican congressional support.

• The list includes South Carolina Sen. Tim Scott, who endorsed Trump on Friday at a rally in New Hampshire. Many pundits consider Scott's support of Trump a blow to Haley, who appointed the then-congressman to the Senate in 2012 when she was governor of South Carolina.

What she's saying: "You'll see a lot of the South Carolina legislature line up behind him, too, and it's because I've never really taken care of elected officials," Haley said on CBS' "Face the Nation" Sunday.

• The former South Carolina governor said she calls out elected officials because "they need to be accountable to the people."
• Haley said she also calls out Republicans and Democrats "when they don't do the right thing,"
• "So, it's not surprising that that set is going towards Trump because he's gonna take care of them — I'm not gonna do that — I'm gonna take care of the taxpayers," she said.

Asked why she thinks the GOP establishment isn't doing more to help her, Haley said "this is what primaries are all about."

• Haley added that this is about people getting "to decide which way they want to go forward."

Go deeper: With campaign on the line, Nikki Haley plays it safe in New Hampshire