33. What criteria determine allocation for free or subsidized access to media for political parties?

Source: 

Section 126 (2), Parliamentary Elections Act no. 1 of 1981

126 (2) A recognised political party or independent group making application under subsection (1) for the use of broadcasting facilities during the period referred to in that subsection, shall be permitted—
(a) in the ease of radio broadcasting, to use—
(i) a total period of thirty minutes, if such party or group has submitted nomination papers in respect of only one electoral district;
(ii) a total period of sixty minutes, if such party or group has submitted nomination papers in respect of more than one but less than fourteen electoral districts or has nominated not less than one hundred and thirty two candidates for the electoral districts, in respect of which it has submitted nomination papers;
(iii) a total period of ninety minutes, if such party or group has submitted nomination papers in respect of fourteen or more electoral districts or has nominated more than one hundred and thirty-two candidates for the electoral districts in respect of which it has submitted nomination papers;
(b) in the case of television broadcasting, to use—
(i) a total period of thirty minutes if such party or group has submitted nomination papers for only one electoral district;
(ii) a total period of sixty minutes, if such party or group has submitted nomination papers in respect of more than one but less than fourteen electoral districts or has nominated not less than one hundred and thirty two candidates for the electoral districts in respect of which it has submitted nomination papers;
(iii) a total period of ninety minutes, if such party or group has submitted nomination papers in respect of fourteen or more electoral districts or has nominated more than one hundred and thirty two candidates for the electoral districts in respect of which it has submitted nomination papers.
The time allotted to each recognised political party or independent group in accordance with the provisions of this subsection may be used by such party or group on one or more occasions, so however that the use on each such occasion shall be for a period not less than fifteen minutes and not more than thirty minutes. 

https://www.srilankalaw.lk/revised-statutes/alphabetical-list-of-statutes/862-parliamentary-elections-act.html 

The amount of time allocated depends on the number of districts or candidates contesting.