SIERRA VISTA — The weeding process begins for candidates interested in being members of the Arizona Legislature next year.

However, not every race in districts 25 and 30 that divide Cochise County will have a primary fight on Sept. 2.

There are 30 legislative districts in Arizona, and voters get to pick one senator and two representatives for each district.

Democrat Manuel “Manny” V. Alvarez of Elfrida and Republican Mary Ann Black of Sierra Vista are running for senator in District 25.

No other candidate for either party has declared a candidacy, meaning the primary will be a pro-forma vote, leading the two candidates to begin their general election campaign for the Nov. 4 vote in earnest.

Alvarez has represented District 25 in the Arizona House of Representatives but decided to run for the Senate to replace term-limited Democratic Sen. Marsha Arzberger.

Black made two unsuccessful runs for the Legislature in the past, the first in 2004 for the House of Representatives and in 2006, against Arzberger in the Senate.

In the District 25 House race, there are two Republicans — Timothy Davies of Marana and David Stevens of Sierra Vista — and two Democrats — Richard Boyer of Hereford and Patricia Fleming of Sierra Vista.

Boyer is a former New Hampshire state representative and senator.

Fleming was unsuccessful in her 2006 run for the Arizona House.

Stevens is the former chair of the Cochise County Republican Party.

Since two people can be elected to represent a district, neither the Republican nor Democrat candidates have a primary challenge.

According to state law, two members of each party can be on the ticket for the general election.

As with District 25, the District 30 Senate race will be a contest between one Republican, Jonathan Paton of Tucson, who currently serves in the Arizona House of Representatives, and Democrat Georgette W. Valle of Green Valley.

Only one Democrat, Andrea Dalessandro of Green Valley, has filed for the District 30 House of Representatives seat, while four Republicans, Frank Antenori of Tucson, David Gowan of Sierra Vista, Doug Sposito of Sonoita and Sharon Collins of Sahuarita, have filed for the two seats.

Dalessandro has no party primary competition, but the four Republicans will have to fight it out for the two positions available to their party to continue on in the general campaign.

The primary outcome will mean there will be three candidates for the Distinct 30 House race on the general election ballot, one Democrat and two Republicans, with the electorate culling that number down to the two eventual winners.