however, many countries have forms of democracy which limit freedom of choice by the voters. one of the most common ways is to limit which parties can stand for parliament, or limit the parties' access to mass media such as television. another way is to rig (unfairly manipulate or interfere with) the voting system by removing votes from opposition voters and substituting votes for the party in power. few countries are textbook (classic, paradigmatic) democracies, and the differences between them has been much studied.