McCain is the senior what from Arizona?

Senators often refer to each other as “the junior senator from Nevada” or “the senior senator from Kentucky” on the floor, but Thursday night Sen. Kay Bailey Hutchison (R-Texas) slipped and called Sen. John McCain (R-Ariz.) something else. 

“I just want to thank the distinguished senior citizen ... senior, senior, senior senator from Arizona,” Hutchison said. "I'm having a bad night."

McCain, 75, is one of the older members of the Senate, but not the oldest. That honor goes to 78-year-old Sen. Frank Lautenberg (D-N.J.).