The three men joining Bob in this round of the tournament? Once Upon a Time's Colin O'Donoghue, Arrow's Stephen Amell and Outlander star Sam Heughan, who, like Bob, is also making a very impressive AMM debut!

This round of voting closes on Wednesday, April 29 at 5 p.m. PT, with the final round kicking off on Thursday. Anyone else just get chills?!

Want to secure your favorite leading man the big win? Then spread to the word to your friends, family and fellow fans by using the #AlphaMaleMadness hashtag and tweeting @kristindsantos on Twitter.

And mobile-users, you can now vote on your device. But you currently cannot vote using the E! Online app. We're working on it, we pinky promise!

Now that the boring stuff's out of the way, let's get to the fun part!