Control Of State Governments After The Midterms

For the most part, Democrats made gains or maintained the status quo in the 2022 midterm elections at the state level, although there were some exceptions.

Governors

National Public Radio (NPR) explains how Governor's races turned out in the 2022 midterm elections:

[M]any Democrats in tighter competitions won reelection: Gov. Janet Mills in Maine, Gov. Gretchen Whitmer in Michigan and Gov. Michelle Lujan Grisham in New Mexico. In Wisconsin, Gov. Tony Evers also won a second term. He will continue to work with a state legislature led by Republicans. Gov. Laura Kelly kept the governor's office in Kansas, a state which former President Donald Trump won twice. 

The party also solidified its control in two states where registered Democrats significantly outnumber Republicans: Maryland and Massachusetts. In both, the Democratic candidate won an open governorship that a Republican had vacated. Democrats now completely control state government in both states. . . . While state legislatures in both were already able to override vetoes from the outgoing Republicans, it will now be even easier to pass Democratic agenda items with a trifecta.

There will also be a Democratic trifecta in Oregon, where Democrat Tina Kotek emerged victorious on Thursday night out of a close race with Republican Christine Drazan. . . . Going into the election, Republicans held 28 state gubernatorial offices, and Democrats, 22. That number will change, although final results are pending in a few states.

According to Ballotpedia, there are now 25 Democratic Governors and 25 Republican Governors, assuming that the Republican Governor wins in Alaska which has slower election results reporting due to rank choice voting but in which a Republican candidate has 51% of the first choice vote in preliminary results which is enough to win (and no other candidate is even close).

Thirty-six states held elections for governor, including 20 with a Republican governor and 16 with a Democratic governor going into the elections. Four offices changed party hands. Partisan control changed from Republican to Democratic in Arizona where Katie Hobbs (D) defeated Kari Lake (R), Maryland, where Wes Moore (D) defeated Dan Cox (R), and Massachusetts, where Maura Healey (D) defeated Geoff Diehl (R). Partisan control changed from Democratic to Republican in Nevada, where Joe Lombardo (R) defeated incumbent Steve Sisolak (D). 

The gubernatorial election in Alaska remains uncalled. As of November 15, Sisolak was the only incumbent to lose a re-election bid. Gubernatorial elections, 2022 

The same Ballotpedia link recaps the results of state attorney general and secretary of state elections in 2022. 

Voters decided who would control 34 of 50 state attorney general offices on November 8. Thirty offices were up for election, and four offices’ appointment authorities were on the ballot. In Iowa, Republicans gained one office that Democrats held before the election as Brenna Bird (R) defeated incumbent Tom Miller (D). In Vermont, Democrats gained one office that Republicans held before the election as Charity Clark (D) won the open seat held by Susanne Young (R). The election for the Republican-controlled office in Arizona remains uncalled. Alaska's governor appoints the state attorney general with confirmation from the state legislature, and that state's gubernatorial election is also uncalled. If neither the Arizona nor Alaska attorney general's office changes party control, the nationwide partisan balance of attorneys general will remain the same at 22 Democrats and 28 Republicans. Attorney General elections, 2022 

Voters decided who would control 35 of the country’s 47 secretary of state offices on November 8. Twenty-seven offices were up for election, and eight offices’ appointment authorities were on the ballot. The partisan control of two offices changed from Republican to Democrat. In Nevada, Cisco Aguilar (D) was elected secretary of state, succeeding incumbent Barbara Cegavske (R), who could not run for re-election due to term limits. Democrats won the governorship in Maryland, which currently has a Republican secretary of state, giving the Democrats appointment control. The Democratic-controlled office in Wisconsin remained uncalled. Secretary of State elections, 2022

Control of State Legislatures

According to NPR:

The Republican Party has controlled a majority of state legislatures in the country since 2010. . . .

The [Democratic] party flipped the Michigan state House and the state Senate, a chamber it has not controlled in four decades. That will give Democrats a clear path to enact their agenda items. In her victory speech, Democratic Gov. Whitmer said that would include growing the economy, improving public education, and continuing to "fight like hell" to protect fundamental rights.

In Pennsylvania, Democrats also claim to have flipped the state House of Representatives, holding a press conference to announce their victory. In that chamber, state Rep. Joanna McClinton could be the first Black woman to become speaker of the Pennsylvania House. The Associated Press has not yet called all of these races, and the state Republican party has not conceded. "We believe Democrats claiming the majority at this time is premature and we are continuing to closely monitor a number of races where votes are still being counted," Pennsylvania House GOP spokesperson Jason Gottesman told NPR.

Some of Democrats' success in Michigan and Pennsylvania can likely be attributed to new voting districts maps drawn after the 2020 Census.

Democrats also took a supermajority in both chambers of the Vermont state legislature, meaning the party can now override the GOP governor. . . .

Republicans held or strengthened their trifectas by picking up seats in Florida, the Iowa Senate and South Carolina's House. The party now holds veto-proof majorities in Florida and Ohio.  

. . . 

But the GOP was unable to gain overwhelming majorities in some states with divided governments, which means Democratic governors will still be able to exercise their veto powers. Republicans gained a supermajority in the Wisconsin Senate, but not the Wisconsin House. That's significant because the state's Democratic governor, Tony Evers, survived a close contest to win a second term. During his first, he vetoed more than 140 bills and will continue to be able to veto Republican-passed legislation.

The same thing happened in North Carolina. Republicans won a supermajority in the state Senate. But Democrats said they have kept enough seats in the state House to keep the GOP from steamrolling Democratic Gov. Roy Cooper.

Divided governments like these are becoming rarer. "Starting in 2010 and in nearly every election since then, the red states have gotten redder and the blue states have gotten more blue," said Kousser, the political scientist. 

Ballotpedia provides the summary statistics:

State legislative elections were held for seats in 88 chambers in 46 states. Heading into the election, Republicans held majorities in 62 state legislative chambers, Democrats held majorities in 36, and the Alaska House was under a power-sharing agreement. Many elections in various states remain uncalled. As a result of the election, Democrats gained control of three chambers—the Michigan House of Representatives, the Michigan State Senate, and the Minnesota State Senate—bringing their total to 39, and Republicans lost control of three chambers, bringing their total to 58. As of Nov. 15, Alaska's Republican-controlled Senate, coalition-controlled House, and Pennsylvania's Republican-controlled House remained uncalled. State legislative elections, 2022

Heading into the 2022 election, there were 23 Republican trifectas, 14 Democratic trifectas, and 13 states with divided governments where neither party held trifecta control. As of November 16, there were projected to be 22 Republican trifectas, 17 Democratic trifectas, and 10 divided governments where neither party had trifecta control. 

[Nebraska has a unicameral nominally non-partisan state legislature that is controlled by Republicans and has a Republican Governor, which is equivalent to the trifecta but not included in the count above.] 

There was one state (Alaska) where trifecta status remained unclear. Before the election, Alaska was under divided government. Trifecta status changed in six states. In Maryland, Massachusetts, Michigan, and Minnesota, divided governments became Democratic trifectas. In Nevada, the Democratic trifecta became a divided government. In Arizona, the Republican trifecta became a divided government. State government trifectas

State Supreme Courts

According to Ballotpedia:

Twenty-five states held state supreme court elections on November 8, accounting for 70 (20%) of the nation’s 344 state supreme court seats. Heading into the election, Republicans had majorities on 26 state supreme courts, Democrats controlled 17, and control of the nine remaining courts was either split between parties or unclear. Republicans gained three seats—two in North Carolina and one in Kentucky—and a Democrat gained one seat in Illinois. As a result, Republicans gained a majority on the North Carolina Supreme Court, and Democrats gained no new majorities. After the election, Democrats will hold majorities on 16 courts, Republicans will hold majorities on 27, and the remaining nine courts’ majorities will either be split between parties or unclear. (Texas and Oklahoma both have two courts of last resort.) State supreme court elections, 2022

While Colorado has judicial retention elections (although none for the state supreme court this year), it wisely does not elect judges.