Section 1600.11 - Types of elections(a)Contribution elections. A contribution election must be made pursuant to § 1600.12 and includes the following types of elections:(1) To make employee contributions;(2) To change the amount of employee contributions;(3) To change the type of employee contributions (traditional or Roth); or(4) To terminate employee contributions.(b)Investment election. A participant may make or change the manner in which future deposits to his or her account are allocated among the TSP core funds only in accordance with 5 CFR part 1601. 66 FR 22089 , May 2, 2001, as amended at 68 FR 35494 , June 13, 2003; 70 FR 32207 , June 1, 2005; 75 FR 24785 , May 6, 2010; 77 FR 26422 , May 4, 2012; 87 FR 31672 , May 24, 2022