<div class="center-block" ng-controller="selectCtrl" style=" top: 50%;
    left: 50%;">
    <div style="height:200px">
        <carousel interval="interval">
            <slide ng-repeat="slide in slides" active="slide.active">
                <div class="jumbotron">
                    <h1>{{slide.name}}</h1>
                </div>
            </slide>
        </carousel>
    </div>
    <div class="row">
        <div class="col-md-4 col-md-offset-2">
            <h1>Winners</h1>
            <ul>
                <li ng-repeat="winner in winners track by $index">{{winner}}</li>
            </ul>
        </div>
        <div class="col-md-4 col-md-offset-2">
            <h1>Options</h1>
            <button type="button" class="btn btn-info" ng-click="start()">Pick a winner</button>
        </div>
    </div>
    <div class="row">
        <div class="col-md-4 col-md-offset-2">
            <input class="input-sm" type="text" ng-model="participantField" placeholder="Your name"/>
            <button class="btn btn-default" ng-click="addParticipant()">add participant</button>
        </div>
    </div>
    <div class="row">
        <div class="col-md-4 col-md-offset-2">
            <input class="input-sm" type="text" ng-model="teamField" placeholder="Team name"/>
            <button class="btn btn-default" ng-click="addTeam()">add team</button>
        </div>
    </div>
</div>

<div class="center-block" ng-controller="selectCtrl" style=" top: 50%;
    left: 50%;">
    <div style="height:200px">
        <carousel interval="interval">
            <slide ng-repeat="slide in slides" active="slide.active">
                <div class="jumbotron">
                    <h1>{{slide.name}}</h1>
                </div>
            </slide>
        </carousel>
    </div>
    <div class="row">
        <div class="col-md-4 col-md-offset-2">
            <h1>Winners</h1>
            <ul>
                <li ng-repeat="winner in winners track by $index">{{winner}}</li>
            </ul>
        </div>
        <div class="col-md-4 col-md-offset-2">
            <h1>Options</h1>
            <button type="button" class="btn btn-info" ng-click="start()">Pick a winner</button><br>
            <input class="input-sm" type="text" ng-model="participantField" placeholder="Your name"/>
            <button class="btn btn-default" ng-click="addParticipant()">add participant</button><br>
            <input class="input-sm" type="text" ng-model="teamField" placeholder="Team name"/>
            <button class="btn btn-default" ng-click="addTeam()">add team</button>
        </div>
    </div>
</div>

Move controls to different column
Move controls to different column
