Midterm elections preview: How might this year's vote change Washington?

Voters in this year's elections will choose all 435 members of the House of Representatives, a third of our Senators, and 36 races for governor. Correspondent David Pogue looks at what midterm election results typically represent, and why – with inflation a key topic on voters' minds, and a historically unpopular president – this year's midterms may upend expectations.