The current U.S. Senate has 52 Republicans and 48 Democrats (including two independents). The 2018 Senate election takes place on November 6, 2018. There are 34 seats up in 2018*, of which 25 are held by Democrats. That party will need to gain 3 seats to take control.
This 3-part Senate map lets you view the current Senate, make a forecast for the 2018 Senate elections, and see the composition of the 2019 Senate based on those predictions. Use the buttons below the map to share it on social media or embed it into a web page.
Check it out at 270 To Win.