Several critical Senate races are virtually tied with the midterms a little over a week away, according to CBS polls released Sunday.

In Florida's Senate race, Sen. Bill Nelson Clarence (Bill) William NelsonDemocrats sound alarm on possible election chaos Trump, facing trouble in Florida, goes all in NASA names DC headquarters after agency's first Black female engineer Mary W. Jackson MORE (D-Fla.) and Gov. Rick Scott (R) are tied at 46 percent.

In Arizona's Senate race, Rep. Kyrsten Sinema (D-Ariz.) leads Rep. Martha McSally Martha Elizabeth McSallySenate GOP set to vote on Trump's Supreme Court pick before election Netflix distances from author's comments about Muslim Uyghurs but defends project On The Trail: Making sense of this week's polling tsunami MORE (R-Ariz.) by 3 points, at 47 percent to 44 percent. The difference is within the poll's margin of error.

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In Indiana, Mike Braun (R) leads the incumbent Sen. Joe Donnelly Joseph (Joe) Simon DonnellyTrump taps Amy Coney Barrett for Supreme Court, setting up confirmation sprint Trump plans to pick Amy Coney Barrett to replace Ginsburg on court Harris faces pivotal moment with Supreme Court battle MORE (D) also by only 3 points, at 46 percent to 43 percent. The narrow gap is also within the poll's margin of error.

Democrats need a net gain of two seats to retake the Senate. Republicans are currently predicted to hold their majority. FiveThirtyEight gives them a 5 in 6 chance of maintaining their majority.

However, the same prediction expects Democrats to flip the House. FiveThirtyEight gives them a 6 in 7 shot at doing so.

Sunday's poll also showed a widening divide between Democrats and Republicans in the midst of a heated political climate.

Among Republican voters polled, 70 percent said that the Democratic Party is composed of people with different values and only 30 percent said the left was advocating for policies with which they disagreed.

Likewise, 66 percent of Democrats told pollsters that the GOP stood for different values than they did, while 34 percent said it advocated for policies with which they disagreed.

In Arizona, pollsters spoke to 972 likely voters from Oct. 23-26 and the results have a margin of error of 4.1 points.

In Indiana, pollsters spoke to 975 likely voters from Oct. 23-26 and the survey has a margin of error of 3.7 points.

The Florida poll has a margin of error of 4 points. Pollsters interviewed 991 likely voters from Oct. 23-26.

— Updated 12:47 p.m.