The meeting, set for 5 p.m. local time, will focus on inaccurate figures submitted in official election returns from several polling stations, Kalisz said in an X post over the weekend.
He added that the Supreme Court would rule on the validity of the election "on the basis of the PKW report and after reviewing any protests."
Media outlets have flagged potential arithmetic errors at more than a dozen polling sites.
At one station in the southern city of Kraków, officials acknowledged they mistakenly swapped the tallies for conservative winner Karol Nawrocki and centrist contender Rafał Trzaskowski.
Polling station staff have asked electoral authorities to correct the record, election commissioner Rafał Sobczuk told reporters.
According to preliminary nationwide results, Nawrocki secured 10,606,877 votes, beating Trzaskowski by 369,591.
Politicians close to Trzaskowski say the errors appear too minor to affect the outcome, but want assurances that all vote counts are thoroughly audited.
Nawrocki is scheduled to be inaugurated as Poland's new president on August 6.
(jh/gs)
Source: PAP