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.

Gov. Doug Ducey has appointed Martha McSally to fill the U.S. Senate seat that Sen. Jon Kyl will vacate at the end of the year.

The former leader of Arizona’s Libertarian Party filed a lawsuit against Gov. Doug Ducey Wednesday, arguing he must immediately hold a special election to fill the U.S. Senate seat formerly held by John McCain.

Supreme Court Justice Clint Bolick urged Gov. Doug Ducey to name Maricopa County Attorney Bill Montgomery to the U.S. Senate just days after John McCain died.

Two-time U.S. Senate candidate Kelli Ward said Monday she'll seek the top post in the Arizona Republican Party and likely forego any effort to seek the late Sen. John McCain's seat in 2020.