Nate Silver's FiveThirtyEight.

One of the most trusted election outlets in the country said that the GOP could flip the Senate. 

CNN. 

After looking closely at every race, CNN analysts have ranked Catherine Cortez Masto as one of the most vulnerable Senators in the entire country.

$816,000. 

That's how much money GOP outside groups have already spent – 17 months before Election Day! – to defeat Catherine in radio and TV ads. And that's only the first wave of attacks. 

GOP dark-money groups spent nearly $50 million to defeat Catherine in 2016, and she won by just 2 points. With Senate control on the line, this race could be even closer and even more expensive.

That's why we set an ambitious goal to raise $250,000 before the FEC end-of-quarter goal on June 30 to ensure Catherine has the resources she needs to defend this seat and our Senate majority. But right now we're falling dangerously short and we need your grassroots support to make up the gap.

John: With Senate control on the line, the stakes couldn't be higher. We urgently need you to help fight back against the GOP's dark-money machine. Please, donate $5 or more before midnight to help us get back on track to hit our end-of-quarter goal and defend our Democratic Senate majority.