CHICAGO — Gov. JB Pritzker emerged as the kingmaker in deep-blue Illinois after pouring millions of dollars and staking his political reputation to deliver his hand-picked Senate candidate a primary victory on Tuesday.

The result strengthens Pritzker’s standing within his party at a critical moment, as he prepares for a November gubernatorial campaign for his third term and looks ahead to a potential presidential run in 2028.

The primary’s biggest winner might be Stratton’s top booster: Gov. JB Pritzker.

The Democratic governor, who is widely seen as a 2028 presidential contender, was unopposed in his own primary as he seeks a third term. But he pumped millions of dollars into lifting Stratton over two members of Congress in the race to replace retiring Democratic Sen. Dick Durbin.

More than $32 million in outside spending poured into four Chicago-area House contests, a tidal wave of cash led by groups tied to the American Israel Public Affairs Committee, the crypto sector and the artificial intelligence industry.

AIPAC and the A.I. industry wound up with split decisions. The crypto sector lost the two races where it spent roughly 90 percent of its money. And progressives failed to build momentum early in midterm primary season.

Here are four takeaways from primary night in Illinois: