Chee contested as a candidate of Singapore Democratic Party along with Prof Paul Tambyah, Sidek Mallek and Chong Wai Fung for the Holland-Bukit Timah GRC for the 2015 general elections. He began his campaign by raising the issue of the high cost of living in Singapore, stressing that there was a need for Singaporeans to have an alternative voice in Parliament. In subsequent election rallies, Chee unveiled the SDP's proposals, which included the raising of personal income taxes on the top 1% of taxpayers to the year-2000 level, the introduction of a minimum wage, as well as the creation of a national healthcare plan to be funded by cutting the defence budget by 40%. In response, the People's Action Party (PAP) team described the proposals as "unrealistic", saying that the SDP's policies involved "tax-and-spend" programmes that would set Singapore "on the road to (debt-stricken) Greece".