National Assembly Data Analysis: Kim Seung-su's Party-Line Defection Rate at 2.6%

A Lawmaker Who Put 'the Center' Ahead of Party Fortunes

The bill sponsorships and voting record of People Power Party lawmaker Kim Seung-su place him 'outside the ideological frame.' His position on economic issues sits at virtually the midpoint—tilted only very slightly to the right on a coordinate scale that sets the average gap between the two major parties at zero. On social and cultural issues, however, he is found to follow his party's average conservative lean.

This matters because the coordinates are a weighted average calculated from analysis of bill content. In other words, the results come not from speeches or media interviews, but from the bills that actually bore his name and the voting buttons he pressed. On economic matters, while he occasionally leans toward market opening and deregulation, he has also been willing to sign bills with redistributive or labor-protection elements. Put simply, he can be read as a lawmaker who sits at the negotiating table on money issues, but stands by his party's basic line on values issues.

The Weight of 2.6%: Between Conviction and Calculation

The 2.6% party-line defection rate is the most striking figure in this profile. Across both major parties, the frequency with which an individual lawmaker's convictions clash with party decisions typically ranges from the high single digits to double digits; Kim sits near the bottom of that range. That works out to roughly two or three defections for every 100 key votes.

Here is where it gets interesting. Overlaying his near-center economic coordinates with his low defection rate allows for two interpretations. One is that he occupies a moderate, pragmatic line within his party and is not far from the party line itself; the other is that he is a cautious type who, even when he disagrees, does not reveal it in recorded votes. Either way, the data sits at odds with that of figures routinely floated as 'defection candidates.' That a public image can diverge from an actual legislative record is also a fundamental limitation of this kind of quantitative analysis.

For reference, these coordinates reflect only 'behavioral data'—bills sponsored and votes cast. They do not capture the spectrum of remarks made on television broadcasts or messages aimed at district constituents. This means the numbers can favor quiet lawmakers and disadvantage those with flashy rhetoric—something to keep in mind.

A Record Free of Conflicts of Interest, and What It Means

Kim's name does not appear in public officials' conflict-of-interest disclosure data. There is no record of him holding shares in industries overseen by his standing committee or receiving large donations from any particular occupational group. That is a strength in itself, as it is evidence that he sits free from industry interests when reviewing legislation.

That said, conflict-of-interest disclosures are based entirely on self-reporting and public records, and thus cannot capture undisclosed relationships. Even so, within the currently available public data, Kim's legislative activity shows no overlap with financial interests.

Two Paths for Reading His Next Move

The outlook suggested by this profile is clear. The combination of economic pragmatism and a low defection rate is a composition that could let him function as a negotiable lawmaker whether in divided government or a governance phase. Given his conservative lean on social issues, however, he is likely to move with his party on bills that ignite values conflicts.

If John Adams said the purpose of government is the happiness of society, Kim Seung-su's data shows that measuring that happiness should be done by record, not ideology. How his signature lines up on future economic negotiation bills will be the yardstick that redraws his coordinates. Whether he preserves his record of centrist pragmatism or shifts to match the weight of his party should become clear in the latter half of this National Assembly term.

Lawmakers Mentioned in This Article

Lawmaker	Party	Ideological Lean	Notes
Kim Seung-su	People Power Party	Economic right · Social conservative	Subject