The ACT Magistrates Court has allowed an adjournment for drink-driving charges against Federal Opposition Leader Tony Abbott's chief of staff until after the federal election.

Peta Credlin is facing a low-level, drink-driving charge after she was breathalysed as she returned home after Mr Abbott's budget reply speech.

She was to appear in court on September 3, in the last week of the campaign.

But the case will now be heard on September 10, three days after election day, so it does not interrupt her commitments during the federal election.

Late last month, a lawyer for Ms Credlin said she would plead guilty to the charge.