Only one seat lost to a Republican would mean the GOP scoops up the majority once again, and in various states, the race is now shaping up to lean that way.
According to Newsweek, a survey from the Adam Laxalt campaign in Nevada revealed that Laxalt is leading Cortez Masto by 39 percent to 37 percent. The survey was carried out by Chris Wilson of WPA Intelligence from September 11 to 15.
"Internal polling from September shows that this has quickly become a very tight race," a polling memo from the Laxalt campaign said, according to Newsweek. "With each passing day of the Biden presidency, the environment gets better for Republicans."
A VCreek/AMG poll showed Laxalt coming out on top as well, leading by a 10-point margin.
The battle spreads across the nation though, not only in Nevada. In New Hampshire, incumbent Senator Maggie Hassan is supposed to battle it out with current New Hampshire Governor Chris Sununu.
A Saint Anselm College poll has Republican Sununu defeating Hassan, at 49 to 40 percent.
In Georgia, where January's special election earned nationwide attention after Raphael Warnock defeated Governor Brian Kemp-appointed Senator Kelly Loeffler for a seat, there is supposed to be another tough fight, with NFL legend Herschel Walker running with the endorsement of former President Donald Trump.
A survey from Public Policy Polling at the start of August revealed Warnock in the lead by a slight two points at 48-46.
Another battle is supposed to play out in Wisconsin if incumbent Republican Senator Ron Johnson decides to run again. A Clarity Campaign Labs poll from September showed Johnson ties with potential Democratic candidate and Wisconsin lieutenant governor Mandela Barnes.
Harris’s allies think she will play a vital role, both by fundraising and participating in campaign rallies.
Democrats view Harris as uniquely positioned to drive up turnout among young people and women, who they think will be important to Democrats retaining their majorities in Congress. Historical trends suggest that Republicans should have an edge in the midterm elections, and Democrats say a strong turnout will be important for the party to keep control.