With just a few weeks until the big election day, the fight for key Senate seats is intense. Republicans are hoping to flip the upper chamber and need to win some tight races to do so. Currently, Democrats have a small edge with 48 seats and three independents who side with them. There are 49 Republicans.

Political experts have different ideas about the outcomes. 270toWin and RacetotheWH predict a Republican majority, with 51 seats to Democrats' 48. But who's winning in these close races?

In Montana, Democrat Jon Tester is up against Republican Tim Sheehy. Both maps show Montana leaning Republican, with Sheehy having a better shot. Polls put Sheehy ahead by 5.4 points.

Ohio's Senate race is a toss-up between Democrat Sherrod Brown and Republican Bernie Moreno. Brown has a 65% chance of winning, but it's close, with Brown leading by just 2.3 points.

Arizona's race between Democrat Ruben Gallego and Republican Kari Lake is looking Democratic. Gallego has a 92% chance of winning and is ahead by 7.6 points.

In Michigan, Democrat Elissa Slotkin is facing off against former Republican Rep Mike Rogers. Michigan is leaning Democratic, with Slotkin ahead by 4 points.

Pennsylvania is also leaning Democratic, with Senator Bob Casey leading Republican Dave McCormick by 4.7 points.

So, where are Republicans gaining seats? While many close races lean Democratic, these states already have Democrat senators. If Republicans win in states like West Virginia and Montana, they could take control.

West Virginia is a safe bet for Republicans, with Governor Jim Justice having a 60% chance of winning. If Republicans win West Virginia and Montana, they could secure 51 seats.

Nebraska is another interesting state. While it leans Republican, some polls show independent Dan Osborn ahead of Republican Deb Fischer. However, Fischer still has a 76.6% chance of winning.

Can Democrats flip any GOP seats? They're trying hard in Texas and Florida, but it's a tough battle. Both states are likely to vote Republican.

Senate Races Heat Up: Republicans Eye Gains with Election Near

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