Federal appellate judges have agreed to decide whether Martha McSally can continue to serve as a U.S. senator at least through the 2020 election.

Martha McSally can keep John McCain's Senate seat until at least the 2020 election, a federal judge ruled late Thursday.

Saying time is running out, the former chairman of the Arizona Libertarian Party wants the 9th Circuit Court of Appeals to order an election – and soon -- to decide who fills out the term of John McCain.

Congressman Ruben Gallego says he won't run for the U.S. Senate, likely avoiding a contentious fight for the Democratic nomination to finish John McCain's last term.

Former astronaut Mark Kelly waded into the political arena Tuesday, making a bid for U.S. Senate and hoping to prove to Arizonans he about more than just gun control.

Woods announced his decision on the Bruce and Pamela show on KTAR News 92.3 Friday morning.

In legal papers filed Friday, Brett Johnson, who is leading the legal team, acknowledged that vacancies in the U.S. Senate must be filled by a special election. But Johnson told U.S. District Court Judge Diane Humetewa that the U.S. Constitution allows the Legislature to let Ducey name a senator to serve until the next regular election.

2018 has been an exciting year from the start. As it comes to a close we’re looking back on some of the standout moments.

Martha McSally scored the political redo of a lifetime when she was appointed to the U.S. Senate on December 18.

Sen.-elect Kyrsten Sinema will be sworn into office before Martha McSally, who Gov. Doug Ducey appointed Tuesday to fill Arizona’s U.S. Senate vacancy.