Sens Kyrsten Sinema and Martha McSally, along with the rest of the U.S. Senate of the 116th Congress, were officially sworn in Thursday.
The new senators mingled with their colleagues and a few predecessors as they walked up to the dais in groups of four to be sworn in by Vice President Mike Pence on Thursday.
Twenty-nine new and re-elected senators, including Sinema and McSally, were sworn in.
Sinema and McSally brought Arizona's U.S. senator count up to 13 on Thursday since it became a state in 1912.
Sen. Sinema was accompanied by Jeff Flake and stood next to Sen. Bernie Sanders. Sen. Mitt Romney was also in her group.
In a statement after being sworn in, Sinema said she was "honored to serve as Arizona's senior Senator" and "so grateful to the voters of our state who entrusted me with this great duty."
"I will continue to work with anyone to get things done for everyday Arizonans," she said. "Our state deserves leaders who put country above party, and I pledge to keep our state’s tradition of doing just that.”
New senators found their desks, some looking inside to see which senators had left their signatures.
The only new senator not to be sworn in was Republican Sen.-elect Rick Scott, who received permission to complete his term as Florida's governor. He will be sworn in Jan. 8, when his term ends.
The Associated Press contributed to this report.
