BERMAN: All right, political junkies, a very big day. Alabama voters hit the polls for a special primary election to fill the Senate seat once held by Attorney General Jeff Sessions. This is a heated, fascinating race. Three Republican candidates leading here. Two of them, the top two, likely head to a run off. And of course, Alabama is a state that President Trump holds near and dear. CNN's Victor Blackwell joins us now live from Pelham, Alabama, where the voting is on -- Victor.</s>VICTOR BLACKWELL, CNN CORRESPONDENT: So, John, this race could really hang on two big endorsements, one from the president of the United States, the other from groups affiliated with Senate majority leader Mitch McConnell. And Senator Luther Strange who was appointed to the seat as a placeholder about six months ago, he has both of them. Now let's first talk about the president's endorsement. A robo call went out for Senator Strange overnight. There have been some tweets of support. That is a boom for Strange because he and his other frontrunners in this race, Congressman Mo Brooks and Judge Roy Moore, they have been working for months to prove who is the truest Trump diehard. Why? Well, although the president's approval rating across the country is at an all-time low, among Republicans in Alabama, the president is at near 90 percent. So that support is big. The other endorsement Strange has from these groups affiliated with Mitch McConnell, hundreds of thousands of dollars for ads on his behalf that could hurt Strange because first there was the failure to pass a repeal of Obamacare. And that offended voters in this state. I've been here several times talking to them. Second, the president has been going -- has been attacking Mitch McConnell for several weeks, so that could hurt him as well. Also, why does Mitch McConnell support Luther Strange? Because Moore and Brooks have been saying this.
Voters Hit Polls in Fight for Sessions' Senate Seat