266.1. The General Council, taking into account the measures of certainty that it considers appropriate, will approve the electoral ballot model to be used in the election for the issue of the vote.

266.2. The electoral ballots for the election of the President of the United Mexican States, senators and representatives will contain:

a) The entity, district, number of the multimember district, municipality or borough;

b) The position for which the candidate or candidates is nominated;

c) The emblem in the color of each one of the national political parties that participate with their own candidates, or in a coalition, in the corresponding election;

d) The ballots will be attached to a numbered booklet, from where they will be detachable. The information that this booklet contains will relate to the corresponding state, electoral district and election. The folio numbers will be progressive;

e) The paternal surname, maternal surname and complete name of the candidate or candidates;

f) In the case of representatives by plurality and proportional representation, one single space for each political party for the formula of candidates and the regional list;

g) In the case of the election of senators by plurality and proportional representation, one single space for the list of the two formulas of ordinary senators and substitutes nominated by each political party and the national list;

h) In the case of the election of the President of the United Mexican States, only one space for each party and candidate;

i) The printed signatures of the President of the General Council and of the Executive Secretary of the Institute;

j) Space for unregistered candidates or formulas, and

k) Space for Independent Candidates.

266.3. The ballots for the election of representatives will have the regional lists of the candidates, ordinary and substitutes, nominated by the political parties printed on it.

266.4. The ballots for the election of senators will have the national list of the candidates, ordinary and substitutes, nominated by the political parties printed on it.

266.5. The emblems in the colors of the political parties will appear in the ballot in the order corresponding to them according to the date of their registration. In case the registration of two or more political parties were given on the same date, the emblems of the political parties will appear in the ballot in the descending order corresponding to them according to the percentage of voted obtained in the last election of federal representatives. 6. In the event that there are coalitions, the emblems of the coalition parties and the names of the candidates will appear in the same size and in a space of the same dimensions as the ones given in the ballots to the parties which participate individually. Joint emblems of the coalition parties cannot under any circumstances appear in a same box, nor can they use different emblems for the coalition.