What is Joost Eerdmans?
{{Infobox officeholder |name = Joost Eerdmans |image = Joost Eerdmans 2014.jpg |office = Party leader [[JA21]] |term_start = 18 December 2020 |term_end = |predecessor = / |successor = |office2 = Group leader [[Livable Rotterdam]] |term_start2 = 5 July 2018 |term_end2 = 8 April 2021 |predecessor2 = |successor2 = Robert Simons |office3 = Municipal councillor of [[Rotterdam]] |term_start3 = 29 March 2018 |term_end3 = 8 April 2021 |predecessor3 = |successor3 = John van Assendelft |office4 = Alderman of Rotterdam |term_start4 = 15 May 2014 |term_end4 = 5 July 2018 |predecessor4 = |successor4 = |office5 = Alderman of [[Capelle aan den IJssel]] |term_start5 = 2 March 2009 |term_end5 = 25 March 2014 |predecessor5 = |successor5 = |office6 = Parliamentary group leader JA21 / Eerdmans–Van Schijndel |term_start6 = 18 March 2021 |term_end6 = |predecessor6 = |successor6 = |term_start7 = 25 September 2006 |term_end7 = 30 November 2006 |predecessor7 = |successor7 = |office8 = Member of the [[House of Representatives (Netherlands)|House of Representatives]] |term_start8 = 31 March 2021 |term_end8 = |predecessor8 = |successor8 = |term_start9 = 23 May 2002 |term_end9 = 30 November 2006 |birth_name = Bernard Johannes Eerdmans |birth_date = {{birth date and age|1971|1|9|df=y}} |birth_place = [[Harderwijk]], [[Gelderland]], Netherlands |death_date = |death_place = |nationality = [[Netherlands|Dutch]] |party = [[JA21]] (2020-)<br> [[Forum for Democracy]] (FVD) (2018-2020)<br> [[Livable Rotterdam]] (2013-)<br> [[Livable Capelle]] (2009-)<br> [[Group Eerdmans–Van Schijndel]] (2006)<br> [[Eén NL]] (2006)<br> [[Pim Fortuyn List]] (LPF) (2002-2004)<br> [[Christian Democratic Appeal]] (CDA) (-2002) |residence = [[Rotterdam]], [[South Holland]], Netherlands |alma_mater = [[Erasmus University Rotter