The down ballot Trump problem
For this strategy to work, they will need to demonstrate an ability to block Trump or Clinton's agenda items that are unacceptable to voters. That means they will have to forcibly oppose both candidates agendas. It also means fewer straight party voters. Since I find neither Trump or Clinton acceptable this is what I will have to do unless Cruz becomes the GOP nominee. I will do it to block the evils of liberalism as embodied by the modern Democrat party.
Senators running in swing states need voters who reject Donald J. Trump to nonetheless pull the levers for the party’s other candidates.