PHOENIX — The Latest on ballot counting in Arizona’s 5th Congressional District race (all times local):

6:05 p.m.

Former business executive Christine Jones’ lead in the Republican primary in a suburban Phoenix congressional district is narrowing.

Jones’ lead over state Senate President Andy Biggs shrunk from 875 votes to just 578 Thursday as more ballots were counted.

The battle to replace retiring Republican Rep. Matt Salmon in the 5th District remains too close to call.

Maricopa County tallied a big batch of outstanding ballots Thursday but there are still more than 35,000 ballots left to count. About a quarter of those are believed to be from the 5th District. Counting will continue Friday.

Former Maricopa County Supervisor Don Stapley and state Rep. Justin Olson remain well behind.

The primary winner will almost certainly go on to represent the heavily Republican district spanning Gilbert, Queen Creek and parts of Chandler and Mesa.

12:25 p.m.

Maricopa County elections officials are making much better progress than they expected counting an estimated 83,000 remaining ballots from Tuesday’s primary election

As of mid-day Thursday, election officials had counted 34,480 ballots and work continues.

Officials still say they expect it to take at least another day to finishing counting. The results will clear up who won the last uncalled congressional race in the state.

The battle to replace retiring Republican Rep. Matt Salmon in the 5th District remains too close to call. Front-runner Christine Jones leads state Senate President Andy Biggs by fewer than 900 votes. Former Maricopa County Supervisor Don Stapley and state Rep. Justin Olson remain well behind.

The primary winner will almost certainly go on to represent the heavily Republican district spanning Gilbert, Queen Creek and parts of Chandler and Mesa.

11 a.m.

Maricopa County elections officials say they expect it to take at least another day to count outstanding ballots that will clear up who won the last uncalled congressional race in the state.

The battle to replace retiring Republican Rep. Matt Salmon in the 5th District remains too close to call.

Elizabeth Bartholomew of the county Recorder’s Office said Thursday that about 83,000 outstanding ballots were verified Wednesday and 5,000 more declared invalid.

About 12,000 went through a second stage of processing and are now being tabulated, and more could be counted Thursday.

The remaining ballots will likely take until late Friday or early Saturday to process and count.

The latest counts are expected to be released after 5 p.m. Thursday. It’s unclear how many will be from the 5th District.

Front-runner Christine Jones leads state Senate President Andy Biggs by fewer than 900 votes. Former Maricopa County Supervisor Don Stapley and state Rep. Justin Olson remain well behind.

The primary winner will almost certainly go on to represent the heavily Republican district spanning Gilbert, Queen Creek and parts of Chandler and Mesa.

3 a.m.

Maricopa County elections officials are planning to begin counting the remaining ballots from this week’s primary election and the results should clear up who won the last uncalled congressional race in the state.

The battle to replace retiring Republican Rep. Matt Salmon in the 5th District remains too close to call.

Front-runner Christine Jones leads state Senate President Andy Biggs by fewer than 900 votes. Former Maricopa County Supervisor Don Stapley and state Rep. Justin Olson remain well behind.

The Maricopa County Recorder’s Office plans to count votes again Thursday after spending Wednesday preparing tens of thousands of ballots.

The primary winner will almost certainly go on to represent the heavily Republican district spanning Gilbert, Queen Creek and parts of Chandler and Mesa.