Screnock told the crowd at his election watch party he was unable to get in touch with Dallet to congratulate her on her win.
Scholz said it's hard to predict now how that race will go and whether Democrats can replicate recruiting "a good candidate" like Dallet to match Kelly's incumbency, which has shown to carry weight in Supreme Court races.
Turnout was 22.2 percent, the highest for a spring election since 2011 and second-highest over the past 12 Supreme Court elections.
Walker, who is seeking a third term in November, previously sounded a wake-up call after a Democrat won a special Senate election in a northwest Wisconsin district Republicans had held since 2001.
While state Supreme Court justices are nonpartisan, the race was highly politicized, with candidates and supporters on both sides finding ways to turn it into a referendum on the opposing party. In a statement Tuesday night, Holder said, "Today, the voters of Wisconsin took a critical first step toward a state government that better reflects their needs and interests". According to the Journal Sentinel, Dallet trounced Screnock 56 percent to 44 percent, a victory that chips away at conservative control of the court and hands liberals their first victory on an open court seat in more than two decades.
"We are at risk of a Blue Wave in Wisconsin", Walker said in a fundraising email Wednesday.
Rebecca Dallet, a liberal Milwaukee judge, easily beat conservative Sauk County judge Michael Screnock on Tuesday to win the 10-year term on the court.
Screnock, meanwhile, argued Dallet's overtures to Democrats showed she would be an "activist" on the court, but Screnock himself received $300,000 from the Republican Party of Wisconsin, the most a political party has ever spent on a Supreme Court candidate in the state's history.
"I don't think Republicans can walk around and just blow this off", said Brandon Scholz, a longtime Republican strategist who has worked on Supreme Court campaigns. She also will become the sixth woman on the court.
Her endorsements came from former U.S. Attorney General Eric Holder, former Vice President Joe Biden and New Jersey Sen.
Democrats, who have been starved for electoral victories since Walker and Republicans swept into power in 2010 amid a national recession, were quick to celebrate the win as a sign Walker's days as governor are numbered.
Screnock was appointed judge by Walker in 2015. Ouellette says "I don't want to support anyone who's backed by the NRA right now". Before that, Screnock was part of a team that defended Walker's Act 10 law that effectively ended collective bargaining for most public workers.