This is a precondition to getting access to the ballot. Only in a few countries (among them, in France, Sweden, and Ireland) there is no requirement for political parties to register before appearing on the ballot. In most countries there are such requirements, and they have generally been increased over the recent years due to the increasing regulation of public campaign funds as well as due to detailed bureaucratic requirements to register legally. The requirements differ across different countries, but the common demands are deposition with electoral authorities of a written statement of the party’s principles and constitution, statutes and rulebooks, an organizational structure, a list of officers, a list of minimum membership or signatures, or sometimes even a minimum number of candidates or a particular regional distribution of candidates. When the burden of restrictions is generally heavy this does “represent a barrier for all new challengers and minor players [and does] deter some contenders”. Moreover, the more specific requirements, such as those that parties must not oppose certain principles or that they have to have a minimum number of contenders, and the like, affect minor parties on the extremes of the political spectrum.