diff --git a/src/cms/cms.js b/src/cms/cms.js
index aedded28..c56b3946 100644
--- a/src/cms/cms.js
+++ b/src/cms/cms.js
@@ -20,7 +20,7 @@ CMS.registerWidget("url-image", UrlImageControl, UrlImagePreview);
 
 CMS.registerPreviewTemplate("index", IndexPagePreview);
 CMS.registerPreviewTemplate("about", AboutPagePreview);
-CMS.registerPreviewTemplate("idea", IdeaPostPreview);
+CMS.registerPreviewTemplate("ideas", IdeaPostPreview);
 
 // Decap exposes a number of lifecycle stages we can hook into and register.
 CMS.registerEventListener({
diff --git a/src/cms/preview-templates/IdeaPostPreview.js b/src/cms/preview-templates/IdeaPostPreview.js
deleted file mode 100644
index d3d35171..00000000
--- a/src/cms/preview-templates/IdeaPostPreview.js
+++ /dev/null
@@ -1,26 +0,0 @@
-import React from "react";
-
-import PropTypes from "prop-types";
-
-import { IdeaPostTemplate } from "../../templates/idea-post";
-
-const IdeaPostPreview = ({ entry, widgetFor }) => {
-    const tags = entry.getIn(["data", "tags"]);
-    return (
-        <IdeaPostTemplate
-            content={widgetFor("body")}
-            description={entry.getIn(["data", "description"])}
-            tags={tags && tags.toJS()}
-            title={entry.getIn(["data", "title"])}
-        />
-    );
-};
-
-IdeaPostPreview.propTypes = {
-    entry: PropTypes.shape({
-        getIn: PropTypes.func,
-    }),
-    widgetFor: PropTypes.func,
-};
-
-export default IdeaPostPreview;
diff --git a/src/cms/preview-templates/IdeaPostPreview.tsx b/src/cms/preview-templates/IdeaPostPreview.tsx
new file mode 100644
index 00000000..a0d4269f
--- /dev/null
+++ b/src/cms/preview-templates/IdeaPostPreview.tsx
@@ -0,0 +1,88 @@
+import React from "react";
+
+import {
+    IdeaPostTemplate,
+    IdeaPostTemplateProps,
+} from "../../templates/idea-post";
+import { ImmutableLike, fromImmutable } from "../utils/immutable";
+
+interface PreviewProps {
+    entry?: ImmutableLike;
+    value?: unknown;
+}
+
+/**
+ * Normalize CMS form data into the shape IdeaPostTemplate expects.
+ * Decap gives us raw widget values which differ from resolved Gatsby data:
+ *   - relation widgets return value_field strings, not resolved objects
+ *   - single select widgets return a string, not an array
+ */
+function normalizeCmsData(
+    raw: Record<string, unknown>,
+): Partial<IdeaPostTemplateProps> {
+    const v = raw as Partial<IdeaPostTemplateProps>;
+
+    // program: single select string → array
+    const program = v.program;
+    const normalizedProgram = program
+        ? Array.isArray(program)
+            ? program
+            : [String(program)]
+        : undefined;
+
+    // authors: relation gives ["name1", "name2"] → [{ name, contactId }]
+    const authors = v.authors
+        ? (v.authors as unknown as string[]).map((a) =>
+              typeof a === "string" ? { name: a, contactId: "" } : a,
+          )
+        : undefined;
+
+    // date: datetime widget returns a Date/object, template expects a string
+    const rawDate = raw.date;
+    const date = rawDate
+        ? typeof rawDate === "string"
+            ? rawDate
+            : new Date(rawDate as string | number).toLocaleDateString("en-US", {
+                  year: "numeric",
+                  month: "long",
+                  day: "2-digit",
+              })
+        : undefined;
+
+    return {
+        ...v,
+        authors,
+        date,
+        isPreview: true,
+        program: normalizedProgram,
+    };
+}
+
+const IdeaPostPreview: React.FC<PreviewProps> = ({ entry, value }) => {
+    const raw = value ?? (entry?.get("data") as ImmutableLike | undefined);
+    const v = fromImmutable<Record<string, unknown>>(raw) ?? {};
+    return (
+        <>
+            <div
+                style={{
+                    background: "#fffbe6",
+                    border: "1px solid #ffe58f",
+                    borderRadius: 4,
+                    color: "#874d00",
+                    fontSize: 12,
+                    margin: 8,
+                    padding: "6px 12px",
+                }}
+            >
+                Previews are approximate/under development — content and styling
+                may differ from production, and not all functionality will be
+                available.
+            </div>
+            <IdeaPostTemplate
+                {...(normalizeCmsData(v) as IdeaPostTemplateProps)}
+            />
+        </>
+    );
+};
+
+export default IdeaPostPreview;
diff --git a/src/templates/idea-post.tsx b/src/templates/idea-post.tsx
index 1f40dc04..442a4b9d 100644
--- a/src/templates/idea-post.tsx
+++ b/src/templates/idea-post.tsx
@@ -41,18 +41,20 @@ const {
     tagRowLabel,
 } = require("../style/idea-post.module.css");
 
-export const IdeaPostTemplate: React.FC<
-    IdeaPostNode & {
-        onExpandDescription?: (
-            content: string,
-            label: string,
-            sectionKey: string,
-        ) => void;
-    }
-> = ({
+export type IdeaPostTemplateProps = IdeaPostNode & {
+    isPreview?: boolean;
+    onExpandDescription?: (
+        content: string,
+        label: string,
+        sectionKey: string,
+    ) => void;
+};
+
+export const IdeaPostTemplate: React.FC<IdeaPostTemplateProps> = ({
     authors,
     date,
     introduction,
+    isPreview,
     nextSteps,
     onExpandDescription,
     preliminaryFindings,
@@ -121,27 +123,34 @@ export const IdeaPostTemplate: React.FC<
                     </Button>
                 </div>
             </div>
-
-            <ContactModal
-                authors={authors}
-                primaryContact={primaryContact}
-                title={title}
-                open={contactModalOpen}
-                onClose={() => setContactModalOpen(false)}
-            />
+            {!isPreview && (
+                <ContactModal
+                    authors={authors}
+                    primaryContact={primaryContact}
+                    title={title}
+                    open={contactModalOpen}
+                    onClose={() => setContactModalOpen(false)}
+                />
+            )}
 
             {/* Tag row */}
             {tags && tags.length > 0 && (
                 <div className={tagRow}>
                     <span className={tagRowLabel}>Topics</span>
-                    {tags.map((t) => (
-                        <TagPopover
-                            key={t}
-                            tag={t}
-                            currentSlug={slug}
-                            className={tag}
-                        />
-                    ))}
+                    {tags.map((t) =>
+                        isPreview ? (
+                            <span key={t} className={tag}>
+                                {t}
+                            </span>
+                        ) : (
+                            <TagPopover
+                                key={t}
+                                tag={t}
+                                currentSlug={slug}
+                                className={tag}
+                            />
+                        ),
+                    )}
                 </div>
             )}
 
@@ -198,16 +207,25 @@ export const IdeaPostTemplate: React.FC<
                                 </ul>
                             </div>
                         )}
-                        {resources && (
-                            <MaterialsAndMethodsComponent
-                                resources={[...resources]}
-                                onExpandDescription={onExpandDescription}
-                            />
-                        )}
+                        {resources &&
+                            (isPreview ? (
+                                <ul className={resourceList}>
+                                    {(resources as unknown as string[]).map(
+                                        (slug) => (
+                                            <li key={slug}>{slug}</li>
+                                        ),
+                                    )}
+                                </ul>
+                            ) : (
+                                <MaterialsAndMethodsComponent
+                                    resources={[...resources]}
+                                    onExpandDescription={onExpandDescription}
+                                />
+                            ))}
                     </div>
                 </div>
 
-                {hasRelatedIdeas && (
+                {hasRelatedIdeas && !isPreview && (
                     <div id="related-ideas">
                         <div className={sectionLabel}>Related Ideas</div>
                         <ul className={relatedList}>