National Super Alliance (Nasa) flag bearer Raila Odinga, his running mate Kalonzo Musyoka and co-principals Moses Wetang'ula and Musalia Mudavadi have arrived at Bomas of Kenya this morning.
Deputy President William Ruto, who is President Uhuru Kenyatta's running mate, also arrived at the venue where the IEBC will declare the victor of the 2017 presidential polls.
The Nasa leaders went into a meeting soon after arriving at the venue.
President Kenyatta has not yet arrived at Bomas.
The Independent Electoral and Boundaries Commission (IEBC) said they had so far received 288 Forms 34B and have reached out to returning officers from the remaining two constituencies as it looks to finish tallying of presidential results.
"The process is going to be long but we are pleading for your patience," IEBC chief executive Ezra Chiloba said in the agency's latest briefing.
The commissioners earlier had a meeting with chief agents of the presidential candidates.
There has been a dramatic increase in the number of security officers, including senior members of the presidential escort, at the venue.
A lounge, formerly used by VIPs in the past few days, is now clearly marked “Presidential candidates only’.
Some two seats, normally used by the President, have also been brought in.
The Presidential Strategic Communications Unit team has also arrived at Bomas.
A number of elected leaders, diplomats and Cabinet secretaries are also at the venue.
Notably present is Garissa MP-elect Aden Duale, Foreign Affairs Cabinet Secretary Amina Mohamed, who was seen chatting with diplomats.
Other CSs at Bomas are Raychelle Omamo (Defence) and Najib Balala (Tourism).
US Ambassador to Kenya Robert Godec is also at the venue.
Portions of this story were first published on Nation