State Sen. Al Melvin says he may drop his bid for the Republican nomination in the Arizona governor's primary election if he can't qualify for public funding.

Another GOP gubernatorial candidate, Andrew Thomas, was turned down for public funding because he fell short of the required number of $5 contributions. Gubernatorial candidates must have 4,500 such contributions; Thomas was 113 short.

Thomas is soliciting more contributions on his Facebook page.

Thomas, Melvin and Secretary of State Ken Bennett are the only three gubernatorial candidates seeking public funding. Bennett has already qualified and has received more than $750,000 from the Clean Elections Commission.

Melvin, meanwhile, said he is far short of the required number and said he will consider dropping out of the race next week if that doesn't change.

Melvin campaign consultant Constantin Querard said Melvin doesn't want to be a spoiler for another conservative candidate by staying in the race if he has no chance to win. He must act by June 27 for his name to be removed from the ballot.

If Melvin pulls out, the field in the Aug. 26 Republican primary narrows to six candidates.

They are Bennett, state Treasurer Doug Ducey, former tech executive Christine Jones, former California congressman Frank Riggs, former Mesa mayor Scott Smith and former Maricopa County attorney Thomas.