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Title Mobilizing voters to mobilize MPs for a second referendum
Post date 07/19/2019
C1 Background and Explanation of Rationale We evaluate the effect of emails on whether supporters of an Anti-Brexit campaign group contact their MP to encourage them to support a second referendum [People’s Vote] on the UK’s exit from the UK [Brexit] via a randomized field experiment conducted by an anti-Brexit campaign group. Supporters of the campaign group that live in constituencies represented by an MP who has not already expressed support for a second referendum on Brexit are randomly assigned to one of three experimental conditions: Receive one of two emails encouraging them to contact their local MP which includes a direct URL that leads them to a pre-designed email for them to sign and forward to their representative, or to control (no email).
C2 What are the hypotheses to be tested?

H1: Email contact from the campaign organisation encouraging their pre-identified supporters to contact their MP lobbying for a second referendum on Brexit will mobilise subjects to contact their MP.
H2: The effect of the campaign group’s email on emails sent to MPs will be greater amongst those subjects who are also informed of their MP’s lack of support for a 2nd referendum.

C3 How will these hypotheses be tested? *

The outcome measure is binary and defined as the successful submission of lobbying emails from supporters to their respective MP via the organisation’s online mask. It takes on the value 1 if the email was submitted via the online platform, and the value 0 if no email was submitted. The outcome is measured via a traceable URL that tracks the successful submission of pre- designed emails of supporters using the organisation’s platform.

The outcome variable will be collected for 7 days from the delivery of the treatment.

C4 Country United Kingdom
C5 Scale (# of Units) 119338
C6 Was a power analysis conducted prior to data collection? Yes
C7 Has this research received Insitutional Review Board (IRB) or ethics committee approval? No
C8 IRB Number not provided by authors
C9 Date of IRB Approval not provided by authors
C10 Will the intervention be implemented by the researcher or a third party? People’s Vote
C11 Did any of the research team receive remuneration from the implementing agency for taking part in this research? No
C12 If relevant, is there an advance agreement with the implementation group that all results can be published? Yes
C13 JEL Classification(s) not provided by authors