The site's forecast models now cover the Senate, House and this year's 36 gubernatorial contests.
Democratic hopes for gaining control of the Senate seem to have narrowed in recent weeks
There are 39 seats held by Democrats and 3 by Republicans that will not have a candidate of the other major party on the ballot this November.
You can now see which seats flipped to the other party in your most recent simulation.
Democrats have plenty of opportunities to gain the 23 seats they need for control. While Democrats also have a path in the Senate, that's a much tougher climb.