Chhai Eang started his political journey in December 1992 when he joined the Youth Movement of
FUNCINPEC and went on to found the local newspaper
Khmer Youth Voice () in 1993. This newspaper was established to support the policies of FUNCINPEC. From July 1993 to October 1994, Chhai Eang served as a secretary to
Sam Rainsy, while also serving as a founder and advisor to the
Khmer Youth Voice newspaper from April 1994 to December 1996. He became a founder and member of the Steering Committee of the Khmer Nation Party in November 1995, which was later renamed the
Sam Rainsy Party. From August 1999 to December 2005, and then again from September 2007 to January 2009, he held the position of Secretary General of the
Sam Rainsy Party. In the
2003 Cambodian general election for the 3rd mandate, Chhai Eang was elected as a member of Parliament for Battambang province, and was re-elected in the
2008 Cambodian general election for the 4th mandate. He was elected as a member of the Senate for the region of Kandal province in the 2012 Senator election. From April 2013 to March 2017, Chhai Eang served as the Vice Chair of the Steering Committee of the
Cambodia National Rescue Party (CNRP). In the 2013 Cambodian general election for the fifth mandate, he was elected as a member of Parliament for
Kandal province. In September 2014, Chhai Eang was elected as the Chairperson of the First Commission on Human Rights, Complaints, and Investigations of the
National Assembly. In March 2017, Chhai Eang was named a vice president of the CNRP. Following the dissolution of the CNRP in November 2017, Chhai Eang was banned from politics, and left Cambodia. In November 2019, the government revoked his
Cambodian passport as well as those of eleven other former high-ranking CNRP cadres. ==References==