Democrats are poised to win every Senate and governor’s race throughout the Midwest this November, and they are expected to pick up House seats in the region too.

But in their bid to win control of Midwestern state Legislatures — bodies that will have the power to gerrymander congressional, State Senate and state house districts after the 2020 census — they face a tough-to-crack Republican firewall.

Let’s take a look, first, at the big picture.

Democrats lead in the major statewide races in Pennsylvania, Ohio, Michigan and Wisconsin — the states that provided the Electoral College votes to put Donald Trump in the White House — along with Minnesota, Indiana and Illinois, a total of 13 governorship and Senate contests.