What is 2017 Copeland by-election?
{{Infobox election | election_name = 2017 Copeland by-election | country = United Kingdom | type = parliamentary | ongoing = no | previous_election = 2015 United Kingdom general election | previous_year = 2015 | election_date = 23 February 2017 | next_election = 2017 United Kingdom general election | next_year = 2017 | seats_for_election = [[Copeland (UK Parliament constituency)|Copeland]] constituency | map_image = Copeland2007Constituency.svg | map_size = 250px | map_caption = Location of [[Copeland (UK Parliament constituency)|Copeland]] within [[Cumbria]] | title = [[Member of Parliament (United Kingdom)|MP]] | before_election = [[Jamie Reed]] | before_party = [[Labour Party (UK)|Labour]] | posttitle = | after_election = [[Trudy Harrison]] | after_party = Conservative Party (UK) | candidate1 = '''[[Trudy Harrison]]''' | image1 = [[File:Official portrait of Trudy Harrison crop 2.jpg|150x150px]] | party1 = Conservative Party (UK) | popular_vote1 = '''13,748''' | percentage1 = '''44.2%''' | swing1 = {{increase}}8.5% | candidate2 = Gillian Troughton | image2 = [[File:No image wide.svg|120x120px|Blank]] | party2 = Labour Party (UK) | popular_vote2 = 11,601 | percentage2 = 37.3% | swing2 = {{decrease}}4.9% | candidate4 = Rebecca Hanson | image4 = [[File:No image wide.svg|95x50px|Blank]] | party4 = Liberal Democrats (UK) | popular_vote4 = 2,252 | percentage4 = 7.2% | swing4 = {{increase}}3.8% | candidate5 = Fiona Mills | image5 = [[File:No image wide.svg|95x50px|Blank]] | party5 = UK Independence Party | popular_vote5 = 2,025 | percentage5 = 6.5% | swing5 = {{decrease}}9.0% }} The '''2017 Copeland by-election''' was a [[b