What is the fine-grained topic of the following text: Driscoll—a great-great grandson of Frederick Weyerhauser who founded the Weyerhauser Company in 1901—becomes the latest Republican to throw his hat into the ring in an election that took on new significance for the GOP after 18-term Democratic incumbent Norm Dicks announced last month that he would not seek re-election at the end of his current term. Only return the topic.
Driscoll's entry into the Republican race for election following Norm Dicks' retirement announcement.