BAGHDAD - Iraq's parliament on Sunday postponed a session to elect the country's next president following a similar decision on Tuesday, due to a persistent deadlock between the two main Kurdish parties.

The session was adjourned after the Kurdistan Democratic Party and the Patriotic Union of Kurdistan failed to agree on a consensus candidate for the presidential post as well as the lack of quorum.

A statement by the parliament's media office said that the speaker held a meeting with the heads of the parliamentary blocs to discuss setting a date for the presidential election, stressing "the importance of adhering to the constitutional timelines."

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Iraq held parliamentary elections in November. Under the constitution, the parliament must elect a president within 30 days of its first session, which was held on Dec 29. The president then has 15 days to nominate the leader of the largest parliamentary bloc as the prime minister to form a new cabinet, which must win a confidence vote within 30 days.

Iraq's Coordination Framework (CF), an umbrella alliance of Shi'ite parties and the largest parliamentary bloc, reaffirmed on Saturday its support for the nomination of former Prime Minister Nouri al-Maliki for the premiership, rejecting foreign interference in the government formation process.

On Jan 24, the CF nominated al-Maliki to head the next government.

READ MORE: Iraq's Shi’ite alliance reaffirms al-Maliki as PM nominee despite US threats

US President Donald Trump warned on Tuesday that Washington would "no longer help Iraq" if al-Maliki returned to power. Al-Maliki dismissed the comments on Wednesday as "blatant US interference" and a violation of Iraqi sovereignty.

Under Iraq's post-2003 ethno-sectarian power-sharing system, the presidency is reserved for a Kurd, the parliamentary speaker for a Sunni Muslim, and the prime minister for a Shi'ite Muslim.