Some hold caucuses which require voters to turn up to discussions on the merits of the contending candidates. Most hold conventional-style elections. In the case of the Democrats in Texas, there is both a caucus and an election. Another variation is that, in some cases, one can only take part in a caucus or election if one is registered for that political party but, in order cases, anyone in the state - including those registered for another party or none - can vote.