>>> welcome to "news4 this week." >> hi, everyone, i'm veronica johnson. we're going to show you some of the more interesting local stories making news this week. among them, battleground virginia, just days away from super tuesday. the candidates for president are setting their sights on the commonwealth. >>> plus, history in the making. we're giving you exclusive access to the new museum of african-american history and culture. barbara harrison shows us some of the incredible artifacts that will be on display. >>> and it's one of the biggest murder cases you've never heard of. now police say the key to solving it could be right up in your attic. >>> but first, to politics. virginia will be one of the key battleground states come november, but you can commercials with super tuesday just three days away. news4's tom sherwood reports. >> reporter: it was bernie sanders in norfolk on tuesday. >> please come out to vote, help us win. >> reporter: president clinton stumping for hillary in...