In summary, Democrats had a good day with solid wins that provided proof Democrats will be a serious force in November; Republican primary voters followed Trump’s direction in choosing their nominees, and that is beginning to worry Republican allies who not long ago were swearing Democrats would no longer control the Senate (McConnell now says Republicans “unlikely”) and other Republicans predicted they would take a big bite out of the House.
Now the battle is on for the mid-term elections. One way to look at the midterms is whether Trump can keep control of “his?” party. If his endorsed candidates win — watch the races for governor in Pennsylvania and Maryland, and for Senate in Connecticut, Ohio, and Arizona, it will be proof that the traditional Republican party is gone, replaced by the “Trumplican” party.
On the other hand, Democrats are energized, and President Biden is proving he is a president who gets things done. See the Kansas vote on abortion — proof that Republican voters cross party lines. See the many Biden accomplishments — Infrastructure, fight Inflation, a $35 cap on insulin for Medicare/Medicaid recipients, climate change, the “chips” bill, the veterans’ health care bill (burn pits), and more.
For more detail, see John J Hudak’s story for the Brookings Institute: November Midterms are Trump’s Make or Break moment.