A bench of Justices Hima Kohli and Deepa Sharma said the matter will be heard on the date already fixed -- August 28.
The plea for an early hearing was moved by Congress leader Rajendra Bharti on whose complaint the poll panel's June 23 order disqualifying Mishra had come.
The EC's order had held him guilty of filing wrong accounts of election expense relating to articles and advertorials in the media during the 2008 Assembly polls in which Bharti had contested against Mishra.
The apex court's order had come after Mishra went in appeal against the high court's July 16 decision dismissing his plea for an interim stay of its single judge's July 14 order upholding the EC's decision.
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The BJP leader had sought an interim stay as a last ditch attempt to vote in the July 17 presidential election. He could not cast his ballot in the election.
The BJP leader had contended before the high court that the EC's order disqualifying him pertained to an election in 2008 and that his subsequent tenure from 2013 would remain unaffected.
The matter had first reached the high court after the apex court on July 12 had transferred the matter to it to be decided expeditiously before the July 17 presidential poll.
Mishra had contested the EC's decision on the grounds of delay in proceedings and that no evidence showed he had authorised paid news articles.
Mishra, who won from Datia Assembly constituency, was the minister for water resources and public relations and the chief spokesperson of the Shivraj Singh Chouhan government.
The poll panel order had said that all the 42 news items that had appeared in five Hindi dailies were "extremely biased in favour of" Mishra.
It had said that its findings had also strengthened the conclusion that he had "knowingly participated or took advantage of the expenditure on such advertisements" that had appeared as news in the publications.