diff --git a/ipynb/Electoral Votes.ipynb b/ipynb/Electoral Votes.ipynb
index 0b523c8..90f9ee8 100644
--- a/ipynb/Electoral Votes.ipynb	
+++ b/ipynb/Electoral Votes.ipynb	
@@ -17,9 +17,9 @@
    "source": [
     "import urllib.request\n",
     "import re\n",
-    "import collections \n",
+    "from collections import namedtuple, defaultdict\n",
     "\n",
-    "Row = collections.namedtuple('Row', 'state delta jan17app jan17dis jan17err app dis err')\n",
+    "Row = namedtuple('Row', 'state delta jan17app jan17dis jan17err app dis err')\n",
     "\n",
     "def read_data(url='https://morningconsult.com/tracking-trump/'):\n",
     "    \"Fetch data from the website and return a list of `Row` objects.\"\n",
@@ -35,16 +35,16 @@
     "\n",
     "def net(row): \"Approval minus disapproval.\"; return row.app - row.dis \n",
     "\n",
-    "votes = dict(AL=9,  AK=3,  AZ=11, AR=6,  CA=55, CO=9,  CT=7, DE=3,  DC=3,  FL=29, GA=16, HI=4, ID=4,\n",
-    "             IL=20, IN=11, IA=6,  KS=6,  KY=8,  LA=8,  ME=4, MD=10, MA=11, MI=16, MN=10, MS=6, MO=10, \n",
-    "             MT=3,  NE=5,  NV=6,  NH=4,  NJ=14, NM=5, NY=29, NC=15, ND=3,  OH=18, OK=7,  OR=7, PA=20, \n",
-    "             RI=4,  SC=9,  SD=3,  TN=11, TX=38, UT=6, VT=3,  VA=13, WA=12, WV=5,  WI=10, WY=3)\n",
-    "\n",
     "rows = read_data()\n",
     "\n",
     "def EV(swing=0, rows=rows):\n",
     "    \"How many electoral votes would Trump win today, given a swing.\"\n",
-    "    return sum(votes[row.state] for row in rows if net(row) + swing > 0)"
+    "    return sum(votes[row.state] for row in rows if net(row) + swing > 0)\n",
+    "\n",
+    "votes = dict(AL=9,  AK=3,  AZ=11, AR=6,  CA=55, CO=9,  CT=7, DE=3,  DC=3,  FL=29, GA=16, HI=4, ID=4,\n",
+    "             IL=20, IN=11, IA=6,  KS=6,  KY=8,  LA=8,  ME=4, MD=10, MA=11, MI=16, MN=10, MS=6, MO=10, \n",
+    "             MT=3,  NE=5,  NV=6,  NH=4,  NJ=14, NM=5, NY=29, NC=15, ND=3,  OH=18, OK=7,  OR=7, PA=20, \n",
+    "             RI=4,  SC=9,  SD=3,  TN=11, TX=38, UT=6, VT=3,  VA=13, WA=12, WV=5,  WI=10, WY=3)"
    ]
   },
   {
@@ -73,7 +73,7 @@
    "source": [
     "What that says is that if an election were held today, January 23, 2019, and if Trump won those states in which he has a net positive approval (i.e. more approval than disapproval), **he would get 164 electoral votes** (that's 9 worse than McCain in 2008). You need **270** to win.\n",
     "\n",
-    "But things can change. The election is a long ways away, and we don't know who's running. In the table below, I list the number of electoral votes Trump would get assuming he gets an increase of net approval of 0 to 9 percentage points across the board in every state. We see he would need a **7** percent upswing in order to win."
+    "But things can change. The election is a long ways away, and we don't know who's running, and we don't know if there is systematic bias in the polling data. In the table below, I list the number of electoral votes Trump would get assuming he gets an increase of net approval of 0 to 9 percentage points across the board in every state. We see he would need a **7** percent upswing in order to win."
    ]
   },
   {
@@ -104,6 +104,84 @@
    "source": [
     "{m: EV(m) for m in range(10)}"
    ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "Here are the states sorted by current net approval:"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": 4,
+   "metadata": {},
+   "outputs": [
+    {
+     "data": {
+      "text/plain": [
+       "[(-62, 'DC', 3),\n",
+       " (-31, 'VT', 3),\n",
+       " (-29, 'CA', 55),\n",
+       " (-29, 'MA', 11),\n",
+       " (-28, 'HI', 4),\n",
+       " (-28, 'MD', 10),\n",
+       " (-23, 'NY', 29),\n",
+       " (-23, 'WA', 12),\n",
+       " (-22, 'OR', 7),\n",
+       " (-21, 'IL', 20),\n",
+       " (-20, 'CT', 7),\n",
+       " (-19, 'NM', 5),\n",
+       " (-19, 'RI', 4),\n",
+       " (-18, 'NJ', 14),\n",
+       " (-16, 'CO', 9),\n",
+       " (-16, 'DE', 3),\n",
+       " (-14, 'MN', 10),\n",
+       " (-12, 'MI', 16),\n",
+       " (-12, 'WI', 10),\n",
+       " (-11, 'NV', 6),\n",
+       " (-10, 'IA', 6),\n",
+       " (-8, 'AZ', 11),\n",
+       " (-8, 'NH', 4),\n",
+       " (-6, 'ME', 4),\n",
+       " (-6, 'PA', 20),\n",
+       " (-3, 'FL', 29),\n",
+       " (-3, 'GA', 16),\n",
+       " (-3, 'NC', 15),\n",
+       " (-3, 'OH', 18),\n",
+       " (-3, 'VA', 13),\n",
+       " (2, 'KS', 6),\n",
+       " (3, 'MO', 10),\n",
+       " (3, 'UT', 6),\n",
+       " (4, 'AK', 3),\n",
+       " (4, 'MT', 3),\n",
+       " (4, 'TX', 38),\n",
+       " (8, 'IN', 11),\n",
+       " (8, 'NE', 5),\n",
+       " (9, 'ND', 3),\n",
+       " (9, 'SC', 9),\n",
+       " (11, 'AR', 6),\n",
+       " (11, 'ID', 4),\n",
+       " (13, 'LA', 8),\n",
+       " (13, 'OK', 7),\n",
+       " (15, 'KY', 8),\n",
+       " (15, 'SD', 3),\n",
+       " (16, 'TN', 11),\n",
+       " (17, 'MS', 6),\n",
+       " (21, 'AL', 9),\n",
+       " (26, 'WV', 5),\n",
+       " (32, 'WY', 3)]"
+      ]
+     },
+     "execution_count": 4,
+     "metadata": {},
+     "output_type": "execute_result"
+    }
+   ],
+   "source": [
+    "sorted((net(row), row.state, votes[row.state]) \n",
+    "       for row in rows)"
+   ]
   }
  ],
  "metadata": {