Good got 52 percent of the vote in a three-way race, defeating James Buchanan, the son of U.S. Rep. Vern Buchanan, and a Libertarian candidate.
Democrats knocked on thousands of doors and flooded the district with volunteers, money and big endorsements such as former Vice President Joe Biden.
Good not only won, she won by seven percentage points.
MacArthur backed President Donald Trump 93 percent of the time previous year, more than any other lawmaker from New Jersey, according to polling expert Nate Silver.More news: Flying leadership transfer inside Germany's SPD meets with resistance
Good's victory was the latest legislative seat to be flipped nationwide by Democrats in districts which President Donald Trump won in 2016 giving them more momentum heading into the midterm elections. For the Republicans, Gov. Rick Scott helped, and former Trump campaign manager Corey Lewandowski parachuted into the Gulf Coast Sunday to lead a Republican rally. Democrats are looking to pick up a couple of House seats and ideally the governor's mansion in Florida, which would give them a voice in the next redistricting process. And they kept up during an early and absentee voting period that saw an unnaturally high turnout for a special election, besting Democrats as a party by almost 200 votes.
Good's appeals worked in what polls projected would be a closer-than-average race in a district that has more registered Republicans than Democrats and has regularly supported GOP candidates in recent elections. The party is, after all, still 3-1 in special House elections over the previous year.
It is mostly dead roses in Washington D.C., where 80 percent of voters disapprove of his job performance, according to the poll.More news: Student brought unloaded gun to Lee's Summit North High School
That's a sign that Good had a strong field operation that was aggressive in getting Democratic voters to the polls, and that Democrats are more motivated to vote than Republicans. After Donald Trump won instead, Democrats' satisfaction dropped, ultimately moving below 20%. Good was able to build up a 3,368 vote lead in absentee and in-person early voting.
Democrats have to continue to recruit candidates like Good and keep registering voters to make gains in the fall, he said.
"Just like we did past year with Annette Taddeo, Democrats are organizing, investing, and winning elections across Florida as voters reject Rick Scott and Donald Trump's disastrous agenda", Perez said. He also credited Good and her team with running an aggressive, disciplined campaign. "They also feel the polarization in the country, that they can capitalize on that", Republican State Rep. Jose Oliva, who as incoming Florida House Speaker coordinates the party's House campaigns, said Monday night. He also experienced the GOP backlash in 2010 that saw Republicans do extremely well in such races.More news: Wenger: Lacazette offended by Aubameyang move
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