By Yan Wu | NJ Advance Media for NJ.com
New Jersey's looking very blue after Tuesday's election.
A wave of Democratic support flipped three U.S. House seats — and probably a fourth, as well — most likely leaving New Jersey's delegation with just one Republican representative for the first time since the 1912 election.
It's a striking result given that when the current congressional map was redrawn in 2011, Democrats strongly objected, arguing it was too skewed in favor of Republicans.
We've crunched results for each of the 12 congressional districts to show how New Jersey has turned heavily blue since the 2014 midterm election — the middle of former President Barack Obama's second term — when Republicans made significant gains.
A note about the data: Vote totals for 2012, 2014 and 2016 from official results kept by the state Division of Elections. The 2018 totals are unofficial results provided by the Associated Press. A winner has not yet been declared in New Jersey's 3rd District race between Andy Kim and Tom MacArthur, though Kim has claimed victory.
If you can't see the map and charts below, click here.
New Jersey's congressional districts shifted toward Republicans in 2014 and then back toward Democrats in 2016 before this year's wave hit, leaving the map awash in blue.
The chart above shows significant gains for Democrats in nearly all districts between the 2016 presidential election and this year's midterm, which many saw as a referendum on President Donald Trump.
Most notable is the 11th District, which is centered in Morris County but includes portions of Essex, Passaic and Sussex counties. Democrat Mikie Sherrill beat Republican Jay Webber to flip a seat that had been held by the GOP for 34 years.
Democrats also flipped the 2nd District and the 7th District, and currently lead in the 3rd District, where Democrat Andy Kim has declared victory over Republican Tom MacArthur, even though the race has yet to be officially called.
Even in the 4th District, where incumbent Republican Chris Smith defeated Democrat Joshua Welle to win a 20th term, the vote differential from 2016 swung significantly in favor of Democrats. Smith has represented the district, which includes parts of Central Jersey and the Shore, since 1981.
Democrats built upon gains made in the 2016 presidential election, seen in the chart above.
While Democrats' gains Tuesday were enough to turn the map almost entirely blue, it wasn't as big as a swing as most might think. In the 2014 midterm election (seen above), half of the congressional districts shifted more toward Republicans than they did this year toward Democrats.
Carla Astudillo and Christopher Baxter contributed to this report.
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