Catherine Cortez Masto’s victory in Nevada clinched the chamber for Democrats.
The 2022 midterm elections shaped up to be some of the most consequential in the nation's recent history, with control of Congress at stake.
All 435 seats in the House and 35 of 100 seats in the Senate were on the ballot, as well as several influential gubernatorial elections in battleground states like Arizona, Georgia, Pennsylvania and Wisconsin.
Democrats were defending their narrow majorities in both chambers and retained control of the Senate, though control of the House isn't yet clear. But a Republican flip of the lower chamber would be enough to curtail most of President Joe Biden's legislative agenda and would likely result in investigations against his administration and even his family.
With FiveThirtyEight forecasting a slight edge for a GOP takeover in the Senate -- and with momentum solidly behind Republicans -- what would that mean?
In short, big changes and a Biden presidency instantly having to play defense.
Read more here.
-ABC News' Trish Turner
The results of the 2022 midterm elections will almost certainly not be called on election night but in the days and weeks after polls close on Tuesday, according to election experts and officials.
This is normal, they told ABC News, because the results of a number of decidedly tight, consequential federal and statewide races will be counted on each state's separate calendar. Early and mail-in votes and ensuing recounts or challenges to results could further prolong the certification of votes.
“I would highly doubt that we would know who controls both chambers of Congress by the end of Election Day. I think we need to be prepared for an Election Day that will likely stretch over the week,” said Ashley Koning, an assistant research professor and director of the Eagleton Center for Public Interest Polling at Rutgers University.
Read more here.
-ABC News' Isabella Murray
As the midterm elections begin, sky-high prices for essentials like food and gasoline have become a major line of criticism leveled at Democrats, who control the White House and Congress.
In fact, the issue may be enough to drive the incumbent party out of power -- just as it has helped fuel government turnover across the globe, some experts told ABC News.
Global inflation during the pandemic era has helped drive public opposition toward incumbent parties and politicians, contributing to shifts in power across a host of countries over the past year, some financial experts told ABC News.
Experts noted how frustration over living costs has animated efforts to change political leadership in ways that resemble voter sentiment in the U.S. leading up to the midterm elections.
Read more here.
-ABC News' Max Zahn
On the eve of Election Day, former President Donald Trump teased Monday night that he will make a "very big announcement" on Nov. 15 at his Mar-a-Lago estate in Palm Beach, Florida.
Trump was speaking at a final rally in Dayton, Ohio, for Republican Senate candidate J.D. Vance and others.
While the former president did not specify the nature of the upcoming announcement, sources told ABC News last week that he could announce a 2024 presidential run as early as next week -- though the sources cautioned that discussions about the specifics, including a date, were still fluid.
“We want nothing to distract from the importance of tomorrow,” Trump said at the rally.
-- ABC News' Teddy Grant and Paulina Tam
