For most of the year, we’ve been repeating the conventional wisdom that a president’s party usually loses seats during a midterm election.

But there are two recent exceptions to that rule: 1998 and 2002.

Former Republican Congressman Tom Davis, from Virginia — the chairman of the National Republican Congressional Committee during the 2002 midterms —and former Democratic Congressman Martin Frost, from Texas — the chair of the Democratic Congressional Campaign Committee during the 1998 midterms — join Chuck to talk about what works and doesn’t for congressional campaigns.