Choose the work before the institution
Start by separating research roles from communications, events, development, government relations, data and operations. A famous institution can advertise all of them in the same cohort, but the evidence for each is different. Read the responsibilities and write down the actual outputs: a research memo, hearing summary, dataset, event brief, donor record, edited article or social post. Pick the route where you can show adjacent work from a course, campus organization, job or independent project. An application to 'public policy' in general forces the reviewer to guess where you fit.
Read the organization's current work and viewpoint
Before writing, read several recent outputs from the exact program, scholar or department. Summarize the question, evidence and conclusion in your own words, then note where your preparation connects. Institutions differ in mission and point of view. You do not need to pretend that every conclusion is yours, but you should understand the organization you are asking to represent and be able to explain the fit honestly. Copying its mission statement or praising its reputation shows less preparation than one accurate sentence about current work.
Build a writing sample around clarity and evidence
Many policy internships request three to five pages. Choose a sample with a clear question, an answer supported by sources and clean citations. A strong excerpt can work when you add a short context note and include the bibliography the employer requests. Remove instructor comments and tracked changes, correct obvious errors and confirm that sharing the work follows your course rules. Do not rewrite the conclusion to imitate the employer's politics or submit a piece largely generated by someone else. The reviewer is evaluating judgment and authorship as much as the topic.
Turn coursework into role-specific evidence
A class paper can demonstrate research; a student newspaper article can demonstrate editing; a club event can demonstrate logistics; a small data project can demonstrate analysis. Describe the question, your contribution, the method and the usable result. Avoid inflated claims such as saying you advised policymakers when you wrote a classroom memo. Think tanks hire students because they are still learning, so accurate evidence is enough. One project you can defend under questions is more useful than a list of policy interests with no example of what you produced.
Make the cover letter do work the resume cannot
Use the letter to answer three questions: why this team, why this type of work and what evidence shows you can contribute. Name a current program or project only when you understand it, and connect it to one or two relevant examples rather than retelling your entire resume. Address practical conditions such as semester availability or work authorization when the posting asks. For CSIS, follow its published 'To Whom It May Concern' instruction; for a named scholar or manager elsewhere, follow that employer's direction. One reusable institutional paragraph is not a tailored application.
Treat transcripts, references and portals as eligibility work
Programs may require an unofficial transcript, references, recommendation letters or a single combined PDF. Those are not decorative extras. Ask references before naming them, give recommenders the official role and deadline, and check whether their submission is separate from yours. Export the final packet and open it once to verify order, links and page count. Keep the requisition because listings can disappear when review begins. A strong writing sample cannot rescue a missing transcript, late reference or application sent through the wrong route.
Prepare for a research-and-judgment interview
Practice summarizing a current policy question in two minutes: what is known, what is disputed, which sources you trust and what you would investigate next. Be ready to discuss the exact methods behind your sample and to correct yourself when you do not know something. Research roles may test writing, editing, Excel, coding or source review; functional roles may test deadlines, stakeholder judgment and communication. Follow every rule for take-home work and disclose tools only as instructed. Confident guessing is especially costly in an organization built around credible analysis.
Compare the offer as a real semester commitment
Before accepting, verify pay, weekly hours, term dates, location, remote expectations, housing and whether you can maintain classes. Cato and Heritage currently require Washington work, while Wilson publishes remote routes and BPC uses a hybrid schedule. A stipend can be paid on a different cadence from an hourly wage, and nearby intern housing is not free housing. Ask the program contact about unclear logistics, get the final terms in writing and decline promptly if the schedule or cost does not work. Prestige does not make an impossible arrangement sustainable.
A practical starting point
A think tank application evidence map
Role output: 2-page policy memo My evidence: course brief comparing two municipal housing policies Method I can explain: source selection, spreadsheet comparison and citation check Relevant team work: [specific current project from the employer's site] Writing sample: pages 2–5 plus bibliography and a two-sentence context note Practical check: eligible year, weekly hours, location, pay, work authorization and deadline Replace every line with facts from your work and the current posting. Do not claim agreement, expertise or impact you cannot support.
This is editorial guidance, not an employer-required format. Use true details, respect authorship rules, and follow the actual application prompt.
Check the program-specific instructions
Use these independent guides to find the official requirements and application route. General advice does not override a publisher's instructions.
Check eligibility and the selected role's document instructions before submitting. FirstInternships does not accept applications or store your resume.
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