The candidate score displayed on election pages contains a reputation points component of 1 point for each 1k reputation points up to a maximum of 20.
However, for candidates with less than 1000 reputation points it seems the reputation points are used directly and without capping in the computation of the score, giving very wrong scores.
Example 1: On the currently ongoing Russian Stack Overflow election, there is a candidate with 556 reputation, and the candidate score shows up as "557/40". See screenshot below:
Example 2: On the page of the 2014 Mathematics Stack Exchange Elections there are two candidates with less than 1000 reputation points and for them the reputation points seem to be used directly and without capping as candidate score.
For example there is a candidate with 667/40 candidate score; they have 663 reputation points.