当先行词是：

the way （方式）

the reason （原因）

the time （时间）

the place （地点）

后面的定语从句，可以使用关系副词 that 引导或者省略that ，还可以使用相应的关系副词或“介词+which“，例如：

Please tell me the way you did it.  跟网友的句子相同。

Please tell me the way that you did it.

Please tell me the way in which you did it.

甚至可以用how 替换the way，引导宾语从句：

Please tell me how you did it.

注：网友的把句子不可以用how，因为 change 不能接 how 引导的宾语从句。

It istn't changing the way they engage potential voters. （最普通的说法）

It istn't changing the way that they engage potential voters. （少用）

It istn't changing the way in which they engage potential voters.（少用）