The establishment wins: Primary voters keep backing incumbents

It seems you’re referring to a situation where voters in primary elections continue to favor incumbent candidates. This is a common occurrence in politics for a number of reasons. Sometimes voters prefer incumbents because they are familiar with them and their policies. They know what to expect from them since they’ve already been in office. Also, incumbents often have more campaign resources and institutional support. Would you like more information on a specific election or topic related to this?