The most-watched Senate races across the country are still up in the air, four Reuters/Ipsos/UVA Center for Politics polls unveiled Wednesday reveal.

Even if in the upcoming midterms, Democrats manage to hold on to the 10 seats that are at risk in states President Trump won in 2016, they will still need to win two additional seats in order to take back the Senate. The new polls suggest Texas and Arizona are the states where Democrats have the best chances. Florida and Nevada's competitions are leaning toward Republican wins, but are notably tight.

In Texas, Rep. Beto O'Rourke (D) leads Sen. Ted Cruz (R) by two percent in a poll of Texas voters. It's a tiny margin, but more than was originally expected from a long-shot Democrat in the deep-red state. Still, a Quinnipiac poll released Tuesday showed Cruz ahead by nine points.

The race to replace retiring Sen. Jeff Flake (R-Ariz.) is looking positive for Rep. Kyrsten Sinema (D), the Arizona poll shows. She's ahead of the President Trump-backed Rep. Martha McSally (R) by three points. Senate races in Florida and Nevada lean toward Republicans, with Florida Gov. Rick Scott (R) just one point above incumbent Sen. Bill Nelson (D), and incumbent Nevada Sen. Dean Heller (R) leading Rep. Jacky Rosen (D) by three.

All of these races are within the 4-point credibility intervals Reuters recorded, meaning the senatorial wannabes are essentially tied. Separate polls were conducted online for each state from Sept. 5-17, and each polled between 992 and 1,039 people. Kathryn Krawczyk