Yes but you see the problem with unequal electorates. Did you get 200 seats? You should be able to do an outline map from one of the ward maps that has been posted on here and you can work out the results for the last two sets of elections.
Which probably has something equivalent to Paint built in.
If you want a graphics package that's less basic, download the GIMP - it's the free/open source equivalent of Photoshop.
Assuming that the file you're working from is fairly sensible (i.e. the space between the lines is all the same colour to start with), filling in the colours is a single-click operation (usually called something along the lines of bucket fill). Getting rid of the unnecessary lines is simply a matter of drawing over them in the same colour as the background.
If you're working from a file where the "empty" space is shaded (as would likely be the case if it had been saved as a .jpeg or .jpg), it's a bit more work, and there are a variety of possible methods for creating a decent base map, depending on the software you'll use.
I never got around to asking, in your Devon/Cornwall Landtag what was Mebyon Kernows performance and how close did they get to winning seats?
4.9% in '2011' (2013) the same in 2007, up from 3.9% in 2003 which was up from 3% in 1999 and 1995
Their highest % in 2011 (and to date) was in Fowey with 25.6% which got them second place some 11.5% behind the winner. They were also within 10% of the winner (but in 4th place) in Padstow with 19.7% and they were within 15% of the winner in Camborne (15.1%) and St Agnes (14.4%). Camborne was their best result in 2007 with 22.5% which gave them second place and within 7% of winning, followed by Helston with 21.4% which 8% from the winner. Camborne also produced their best result in 2003 when they won 19.9% and although this put them in 4th place they were within 5% of the winner so this is the closest they have come to winning a seat. In previous years their performance in Camborne was surpassed by those in Penzance and in Bude-Stratton
While I was crunching some of my numbers I found that a way of speeding up the calculations is as follows; Firstly get the results from Andrew Teales site Starting with the seat made of the fewest wards copy and paste the results table into an Excel spreadsheet Then simply re order the vote totals in rows by party (so put all IND candidates votes in a row, all the Labour candidates votes in a row etc) And finally AUTO-SUM (FORMULAS BUTTON) for each row, aligning the answers in a column and you have the total votes for each party in the seat. Then AUTO-SUM (FORMULAS BUTTON) the column with total votes per party to get the total number of votes for the seat Then just divide all the total party votes by total number of votes to get the vote percentage for each party
Using this formula it takes me approximately 1 minute per ward + 2 minutes at the end for total figures I hope this will speed things up for you!