In 2009, Delegate Steve Shannon, the Democratic incumbent, did not seek reelection in the 35th district in order to run (unsuccessfully) for Attorney General of Virginia. Keam declared his intention to run for the seat. On Election day Mark Keam defeated Republican challenger James E. Hyland, making Keam the first Asian-born immigrant and the first Korean American elected to any state-level office in Virginia. He was sworn into office on January 13, 2010 at the Virginia State Capitol in Richmond, Virginia.
In February 2010, Keam and fellow freshman delegate James LeMunyon, a Republican, authored an op-ed in The Washington Post about their introduction of a bill to the General Assembly, which would attempt to make the voting records of General Assembly members more accessible to the public. The bill passed the House of Delegates 86 to 13 later that month.[7] A State Senate committee carried the bill over for a year, and it has not yet been voted on.[8]
He told a local newspaper in his district in January 2010 that he can legislate from an immigrant's point of view; saying that "I want to be able to speak on issues where people say, ‘I’ve never met an immigrant in my life; I don’t know what you guys think about it,’... I want to be able to say, ‘Well, let me tell you what they think about it.’" He has also sponsored another bill which would raise the number of ESL, or "English as a second language" teachers in Virginia’s schools from 17 full-time positions to 30 full-time positions for every 1,000 students.
Keam said in 2010 that he would abstain from voting on any bill which would pose a conflict of interest due to him being on an unpaid leave of absence from Verizon Communications, and he would not introduce any telecommunications legislation to the House of Delegates.[6]
Keam was re-elected to his seat in Virginia’s House of Delegates on November 7, 2017.[9]
In 2021, Keam co-founded the General Assembly's first Asian American and Pacific Islander Caucus.[10]
Committee assignments
Keam has served on the House committees on Agriculture, Chesapeake and Natural Resources (2012–); Education (2012–); Finance (2010–); and Militia, Police and Public Safety (2010–2011).