Alaska is very likely to go down as Republican if the R candidate even gets 15% of remaining votes, that gets Republicans up to 49.
North Carolina, not having a runoff requirement for the senate election gets down to basic math: 5.4 million votes have been cast in the senate race, that's 98% of the total vote, with 2% (108K) remaining to be counted. The republican is leading by 96K votes. That means that if the republican candidate get 12% of the remaining vote, he wins. It's likely he's get at least 30%, so North Carolina, short of Lyndon Johnson rising from the grave to steal another senate race 72 years after the first, that makes 50 republican senators.
Only Georgia (and Louisiana) require a majority win in general elections.
That leaves 2 in Georgia, both with 2% of the votes not counted. While republicans are ahead in both races, currently neither has a majority, so there's a runoff.
With the senate in the balance, expect 100's of Millions up to Billions (yes billions) of dollars to flow into Georgia to influence these runoffs of the 7.6M registered Georgia voters.
The democrats have to win both. The republicans only have to win 1.
But then again Michael Bloomberg has offered to spend up to a Billion, so he could afford to pay (indirectly of course

) $130 to each voter for their patronage. And others (on both sides) are likely to buy the senate.
But even with a 50-50 senate, one current US senator noted it is very difficult for the president to get things done as a single senator from the presidents party can screw the pooch. And don't forget there are
Bottom line: Pray for at least 1 republican senator from Georgia, but if that doesn't happen, don't bet heavy on the Green Raw Deal, comprehensive gun control, repeal of Trump tax cuts and other key.
One last thought: A single democrat senator can literally get almost anything they want by threatening to vote against a presidentially supported bill, making leadership very nervous and more likely to water down harsh legislation to even have a hope of passing.