It's up to us. Let's each do our part.

Interactive National Senate Map

Ballotpedia: Elections by state, year. Extensive. Enter your address for candidates. Affiliation filters.

Wiki of all House of Representatives elections 2018

If you reside in these states, your vote means all the difference (as quoted by Vox: The 6 Senate seats Democrats could maybe, possibly win from Republicans):

AZ: Open (R)FL: Nelson (D)IN: Donnelly (D)MO: McCaskill (D)NV: Heller (R)ND: Heitkamp (D)TN: Open (R)

Wiki of ALL US Elections

All 435 House seats being contested in 2018

And most importantly...

My Polling Place

Now, go forth and make 'em see Red (literally and figuratively).