Sure, but it's *really* unlikely the Republicans will gain traction in the Senate. The numbers are stacked heavily against them. The GOP has 24 Senate seats up for grabs, the Democrats have just 10. As for the House, the Republicans already have a significant advantage. Given the gerrymandering we've put in place over the past few decades, I don't think there's much more the GOP can do. And there are some really interesting battleground areas that simply weren't in play in past elections. Hell, John McCain is fighting hard to keep his Senate seat because so many Arizonans hate Trump. If anyone should be a shoe-in for reelection, it's a guy like McCain. It's possible Trump will hurt his party more than he helps it by bringing out the typical non-voters and nationalists. Some classic non-voting demographics could show up in force just to stop the man: primarily Hispanics, which have massive influence in some crucial states (Texas, Arizona, New Mexico, Florida, etc).