Peta Credlin, 42, is facing a low level drink driving charge in the ACT Magistrates Court.

Credlin was caught driving after a party function following Mr Abbott's budget reply speech in May.

The 42-year-old was breath tested by police outside her home and blew 0.075, just above the legal limit of 0.05.

Credlin indicated last month she would plead guilty to the offence - the first in her 21 years of driving.

She was due to appear back before the court on September 3, but the matter was re-listed earlier, and came back before the court on Friday morning.

Credlin's lawyer Ben Aulich appeared on her behalf, and sought to delay the matter another week, from September 3 to September 10.

The court granted the adjournment, meaning the charge will now not be finalised until after the federal election.

Credlin was not in court on Friday.

The last time the matter was before the court in July, Mr Aulich handed up a letter explaining Credlin would not be in a position to appear until September.

When handed the letter, the magistrate said she was surprised to hear of Credlin’s high profile, saying she had never heard of her.

Fairfax Media understands Credlin will apply for a non-conviction order.