Top 100 most UKIP-friendly Conservative-held seats in the country:

The original article was posted here link

please note the list was compiled before the Clacton by election

92 Labour seats which could fall to UKIP  <<< link for Labour seats

Seat	Region	Con Majority	Ukip 2010
Clacton	Eastern	12,068	-
Boston & Skegness	East Midlands	12,426	9.5
Great Yarmouth	Eastern	4,276	4.8
Waveney	Eastern	769	5.2
Louth & Horncastle	East Midlands	13,871	4.3
Amber Valley	East Midlands	536	2
North East Cambridgeshire	Eastern	16,425	5.7
Cleethorpes	Yorkshire	4,298	7.1
South Holland & the Deepings	East Midlands	21,880	6.5
Cannock Chase	West Midlands	3,195	3.5
North West Norfolk	Eastern	14,810	3.9
Dudley South	West Midlands	3,856	8.2
Brigg and Goole	Yorkshire	5,147	4
Castle Point	Eastern	7,632	-
South West Norfolk	Eastern	13,140	6.2
Erewash	East Midlands	2,501	1.8
Carlisle	North West	853	2.3
North Warwickshire	West Midlands	54	2.8
Sherwood	East Midlands	214	3
Yorkshire East	Yorkshire	13,486	4.2
Scarborough and Whitby	Yorkshire	8,130	3
Bridgwater and West Somerset	South West	9,249	4.8
North Thanet	South East	13,528	6.5
Sittingbourne and Sheppey	South East	12,383	5.4
Camborne and Redruth	South West	66	5.1
Wyre Forest	West Midlands	2,643	2.9
Morcambe and Lunesdale	North West	866	4.2
Staffordshire Moorlands	West Midlands	6,689	8.2
Dover	South East	5,274	3.5
Preseli Pembrokeshire	Wales	4,605	2.3
Isle of Wight	South East	10,527	3.5
Norwich North	Eastern	3,901	4.4
Aldridge-Brownhills	West Midlands	15,256	-
Montgomeryshire	Wales	1,184	3.3
Mid Norfolk	Eastern	13,856	5.5
Havant	South East	12,160	5.9
Camarthen West & S Pembrokeshire	Wales	3,423	2.8
Bognor Regis & Littlehampton	South East	13,063	6.5
South Basildon & East Thurrock	Eastern	5,772	5.9
Tamworth	West Midlands	6,090	4.9
Halesowen & Rowley Regis	West Midlands	2,023	6.4
Torridge & West Devon	South West	2,957	5.5
Thanet South	South East	7,617	5.5
Clwyd West	Wales	6,419	2.3
Tiverton & Honiton	South West	9,320	6
Nuneaton	West Midlands	2,069	0
Forest of Dean	South West	11,064	5.2
Aberconwy	Wales	3,398	2.1
Penrith and the Border	North West	11,241	2.8
North West Leicestershire	East Midlands	7,511	2.2
Christchurch	South West	15,410	8.5
Gainsborough	East Midlands	10,559	4.2
Newton Abbot	South West	523	6.4
Hastings and Rye	South East	1,993	2.8
South Dorset	South West	7,443	4
Broadland	Eastern	7,292	4.5
Stourbridge	West Midlands	5,164	4.5
North Shropshire	West Midlands	15,828	4.7
Thirsk and Malton	Yorkshire	11,281	6.6
South East Cornwall	South West	3,220	6.2
Weston-Super-Mare	South West	2,691	2.7
Hereford & South Herefordshire	West Midlands	2,481	3.4
Bosworth	East Midlands	5,032	2
Totnes	South West	4,927	6
Ludlow	West Midlands	9,749	4.4
Folkestone and Hythe	South East	10,122	4.6
Suffolk Coastal	Eastern	9,128	5.7
Crewe and Nantwich	North West	6,046	2.8
Wellingborough	East Midlands	11,787	3.2
Berverley & Holderness	Yorkshire	12,987	3.5
Grantham & Stamford	East Midlands	14,826	3
Burton	West Midlands	6,304	2.9
Chatham and Aylesford	South East	13.9	3
Gosport	South East	14,413	3.2
Portsmouth North	South East	7,289	4.1
Bexhill and Battle	South East	12,880	0
Rossendale and Darwen	North West	4,493	3.4
South Suffolk	Eastern	8,689	7.1
Harlow (Essex)	South East	4,925	3.6
Sleaford and North Hykeham	East Midlands	19,905	3.6
Rochford and Southend East	Eastern	11,050	5.8
New Forest West	South East	16,896	5.9
Redditch	West Midlands	5,821	3.4
Kingswood	South West	2,445	3.2
Harwich and North Essex	Eastern	11,447	5.2
New Forest East	South East	11,307	5
South West Wiltshire	South West	10,367	5.5
Lincoln	East Midlands	1,058	2.2
South Staffordshire	West Midlands	16,590	5.5
Braintree	Eastern	16,121	5
Kettering	East Midlands	9,094	-
West Suffolk	Eastern	13,050	6.4
East Worthing & Shoreham	South East	11,105	6.2
Weaver Vale	North West	991	2.3
Basildon & Billericay	Eastern	12,398	3.8
North Herefordshire	West Midlands	9,887	5.7
Rayleigh and Wickford	Eastern	22,338	4.2
South Derbyshire	East Midlands	7,128	2.4
Worthing West	South East	11,729	6
South Norfolk	Eastern	10,940	4.2