Multiple Republicans are joining the race to replace state Senator John McGuire following his election to Congress.Preview: Virginia Senator Mark Warner sent a letter to the company that owns Steam, a platform that boasts millions of users worldwide, over reports of extremist behavior by users. The letter was sent after the Anti-Defamation League released a report last week claiming millions of users were engaging in antisemitism, racism and extreme behavior, including praise for mass shootings and terrorist groups. Warner's letter asks the company to respond to these concerns.