The European Union on Tuesday condemned Chad's failure to allow nearly 3,000 civil society members financed by the EU to observe the presidential election.
Opponents of junta leader and presidential candidate Mahamat Idriss Deby Itno had called for a boycott, dismissing Monday's ballot as fixed.
And international rights groups had warned that the vote was not expected to be free or fair after a crackdown on the opposition.
On Sunday, four civil society associations, including the Chadian Human Rights League, hit out at the Deby-appointed electoral commission for refusing to accredit 2,900 of their representatives as voting observers.
"The EU in Chad condemns the non-accreditation of these civil society organisations," the EU said on Facebook.
"By so doing," the commission "blocked their contribution to the transparency of the electoral process financed by 3.8 million euros ($4.1 million) of European funds."
The head of the EU's political mission to Chad, Sona Jarosova, told AFP the bloc had "supported observation by Chadian citizens with EU funds".
The election came after three years of military rule in a country crucial to the fight against jihadism across Africa's Sahel desert region.
General Deby's cousin and chief election rival Yaya Dillo Djerou was shot point-blank in the head in an army assault on February 28, according to his party.
Deby was proclaimed transitional president by army generals in 2021 after his father was killed in a gun battle with rebels following 30 years in power.
The International Federation for Human Rights on Friday said that the election appears "neither credible, free nor democratic".
The International Crisis Group noted "a number of problems in the run-up to the balloting cast doubt on its credibility".
These include measures allowing officials to publish only regional vote tallies rather than posting the results at individual polling stations -- making it impossible for observers to verify the count.
Official results are expected on May 21.
Shortage of ‘bentua’ hits Accra Central Market
Blame IMF programme for Cedi's decline —Prof Bokpin
Court denies Kasoa soldier killer bail
All crooked deals are cooked at Jubilee House – Franklin Cudjoe
Don’t be tricked by Mahama’s rebranding move – Richard Ahiagbah to Ghanaians
Petition against Kissi Agyebeng not surprising – Justice Srem Sai
Akufo-Addo’s handling of petitions against top officials disappointing – Justice...
Osino: ‘Sleeping’ tipper truck driver runs into building
Ahmed Suale's killers will be brought to justice no matter how long it takes - A...
Late John Kumah urged me to run for NPP flagbearer, strongly supported me — Bawu...
