Margins for Clinton using multi-field csv

<!DOCTYPE html>
<meta charset="utf-8">
<style>
.bar--positive {
  fill: steelblue;
}

.bar--negative {
  fill: brown;
}

.bar--neutral {
  fill: grey;
}
.bar--positive:hover ,.bar--negative:hover ,.bar--neutral:hover  {
  fill: orangered ;
}

.axis text {
  font: 10px sans-serif;
}

.axis path,
.axis line {
  fill: none;
  stroke: #000;
  shape-rendering: crispEdges;
}
div.tooltip {	
    position: absolute;			
    text-align: center;			
    width: 60px;					
    height: 28px;					
    padding: 2px;				
    font: 12px sans-serif;		
    background: lightsteelblue;	
    border: 0px;		
    border-radius: 8px;			
    pointer-events: none;			
}

</style>
<body>
<script src="//d3js.org/d3.v3.min.js"></script>
<script>

var margin = {top: 20, right: 30, bottom: 40, left: 30},
    width = 960 - margin.left - margin.right,
    height = 1900 - margin.top - margin.bottom;

var x = d3.scale.linear()
    .range([0, width]);

var y = d3.scale.ordinal()
    .rangeRoundBands([0, height], 0.1);

var xAxis = d3.svg.axis()
    .scale(x)
    .orient("bottom");

var yAxis = d3.svg.axis()
    .scale(y)
    .orient("left")
    .tickSize(6, 0);

// Define the div for the tooltip
var div = d3.select("body").append("div")	
    .attr("class", "tooltip")				
    .style("opacity", 0);
  
var svg = d3.select("body").append("svg")
    .attr("width", width + margin.left + margin.right)
    .attr("height", height + margin.top + margin.bottom)
  .append("g")
    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

d3.csv("FLMarginsForClinton2016.csv", type, function(error, data) {
  x.domain(d3.extent(data, function(d) { return d.marginClinton; })).nice();
  y.domain(data.map(function(d) { return d.district; }));

svg.selectAll(".bar")
      .data(data)
    .enter().append("rect")
    .attr("class", function(d) {  
                 if (d.current == 'R')
                  return "bar bar--negative";
                 else if (d.current == 'VACANT')
                 return "bar bar--neutral" ;
                else // dems
                 return "bar bar--positive";
            })
   .attr("x", function(d) { return x(Math.min(0, d.marginClinton)); })
      .attr("y", function(d) { return y(d.district); })
      .attr("width", function(d) { return Math.abs(x(d.marginClinton) - x(0)); })
      .attr("height", y.rangeBand())
    .on("mouseover", function(d) {
      div.transition()		
                .duration(200)		
                .style("opacity", .9);		
            div	.html('Voters in Florida HD ' + d.district + ' cast ' + d.Clinton + ' votes(' + d.Clinton + ') for Clinton out of a total of ' + d.Total)	
                .style("left", (d3.event.pageX) + "px")		
                .style("top", (d3.event.pageY - 28) + "px");	
 // return tooltip.style("visibility", "visible").text('Voters in Florida HD ' + d.district + ' cast ' + d.Clinton + ' votes(' + d.Clinton + ') for Clinton out of a total of ' + d.Total);
  });

svg.append("g")
      .attr("class", "x axis")
      .attr("transform", "translate(0," + height + ")")
      .call(xAxis);

var tickNegative = svg.append("g")
      .attr("class", "y axis")
      .attr("transform", "translate(" + x(0) + ",0)")
      .call(yAxis)
    .selectAll(".tick")
    .filter(function(d, i) { return data[i].marginClinton < 0; });

tickNegative.select("line")
      .attr("x2", 6);

tickNegative.select("text")
      .attr("x", 9)
      .style("text-anchor", "start");
});

function type(d) {
  d.marginClinton = +d.marginClinton;
  return d;
}

</script>

https://d3js.org/d3.v3.min.js