The National Super Alliance (Nasa) will launch its manifesto on Monday.
Nasa flag bearer Raila Odinga said the document addresses issues that would improve the lives of Kenyans.
He claimed the Jubilee government is corrupt and has led to an economic crisis in the country.
Addressing residents of Chuka town in Tharaka Nithi County on Friday, Mr Odinga said all sectors in the country are in crisis.
“All sectors are in crisis, including the essential health sector, but we have the remedy. Nasa will revive agriculture and make sure basic prices of things go down,” said Mr Odinga.
On education, the ODM party leader reiterated that if Nasa wins the August elections, it would scrap payment of fees in public primary and secondary schools fee and also increase allocation to the Higher Education Loans Board.
“Jubilee has been cheating teachers on the issue of salary increment but Nasa will pay them well,” he said.
Mr Odinga’s running mate, Kalonzo Musyoka, on his part tore into the Jubilee government accusing it of tribalism.
He denied accusations that the opposition would revive the International Criminal Court (ICC) cases against President Uhuru Kenyatta and his Deputy William Ruto if they assumed power after August 8.
“We will unite Kenyans and we are not planning to revive the ICC cases. Jubilee is only seeking sympathy votes,” he said.
Nasa co-principals Moses Wetang’ula and Musalia Mudavadi asked the locals to reject Jubilee Party in the coming elections saying that Kenya was set for change that would only be brought by Nasa.