From CNN Ticker Producer Alex Mooney

WASHINGTON (CNN) -- Sen. John McCain has named 18 Alabama state representatives as "advisors" to his political action committee, as the Arizona Republican continues to build support in the South for a possible White House bid.

The 18 lawmakers will form a "legislative advisory committee" to counsel McCain on issues heading into the midterm elections.

"I thank all of the Alabama House Republicans, who are already expressing their willingness and enthusiasm to help me share my vision for our nation this November," McCain said in a statement released by Straight Talk America PAC.

But with only one month remaining before voters head to the polls, the appointments are seen as an effort by McCain to lock up support for a potential presidential bid in 2008. In the past several weeks, McCain has added key party leaders from several crucial presidential primary states to serve as advisors to his PAC.