McCain's approval 2nd lowest among U.S. senators

John McCain has the second-lowest approval rating among U.S. senators, according to a new poll.

About one-third of Arizona's registered voters approve of McCain's job performance - 34 percent compared with 53 percent who disapprove of the job he's doing - according to a new poll by Public Policy Polling.

That's a drop from 40 percent approval in January.

Only Sen. Joe Lieberman (I-CT) scored lower among sitting senators, 29 percent to 58 percent.

Sen. Jon Kyl - 42 to 46 - didn't fare much better, but voters think Gov. Jan Brewer is doing a good job by a 46 to 45 percent margin.

In other numbers, 60 percent think the state should not have an official gun; 51 percent disagree with cutting off federal funding for Planned Parenthood; and 49 percent have a favorable opinion of Maricopa County Sheriff Joe Arpaio.

The poll was conducted April 28 - May 1 among 623 registered voters. It has a margin of error of 3.9 percent.