All survey respondents were asked whether they have ever engaged in any of 13 different political and civic activities. These included, for example, registering to vote, signing a petition, contacting a public official, publishing a letter to the editor, and whether they have ever been elected to a government office. Among the 2,508 respondents, 164 say they have been elected to a government office at least once.
Not only was it a rather small size of elected officials, it was also completely voluntary test in the first place and entirely voluntary to answer the identifying questions.
The small sample size, and entirely opt-in nature of the test and questions lead me to believe these results mean very little (their results regarding colleges in the US is much more instructive, however).
To thine own self be true. (If not that, at least make some money.)