VotePredictor MCP MCP server

Provides an MCP server for accessing 2026 US election forecasts, congressional voting records, and forecaster accuracy ratings. It allows agents to query race probabilities, chamber outlooks, and member profiles using natural language inputs like state names or district codes.

Endpoint and access

No sign-in: your client connects and lists tools immediately, with no account or key.

No sign-inEndpoint checked 2026-10-05Operated by oconnorventures.com, LLC

MCP endpoint (Streamable HTTP)

https://votepredictor.com/api/mcp

Vendor documentation

What you can do with it

Forecast win probability for specific House or Senate races
Retrieve chamber control outlook and expected seat counts
Check difficulty-adjusted accuracy ratings for forecasters
Get member profile and race details by bioguide ID

Tools advertised by the last live check:

forecast_race
chamber_outlook
forecaster_accuracy
member_profile

Connect from your client

Each snippet registers the same endpoint; pick the client you use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Claude Code

Run this once in a terminal. It registers a Streamable HTTP server. Use --scope project to write .mcp.json for the repo.

Claude Code configuration

claude mcp add --transport http votepredictor-mcp https://votepredictor.com/api/mcp

Codex

Run this once. Codex stores MCP servers in ~/.codex/config.toml (or .codex/config.toml in a trusted project).

Codex configuration

codex mcp add votepredictor-mcp --url https://votepredictor.com/api/mcp

Cursor

Merge this server into .cursor/mcp.json in your project, then enable votepredictor-mcp in your MCP settings.

Cursor configuration

{
  "mcpServers": {
    "votepredictor-mcp": {
      "url": "https://votepredictor.com/api/mcp"
    }
  }
}

Cline

Merge this into cline_mcp_settings.json (Cline → MCP Servers → Configure). The type must be streamableHttp for a remote HTTP server.

Cline configuration

{
  "mcpServers": {
    "votepredictor-mcp": {
      "type": "streamableHttp",
      "url": "https://votepredictor.com/api/mcp",
      "disabled": false
    }
  }
}

VS Code

Merge this server into .vscode/mcp.json. Use MCP: List Servers to start votepredictor-mcp and inspect its tools.

VS Code configuration

{
  "servers": {
    "votepredictor-mcp": {
      "type": "http",
      "url": "https://votepredictor.com/api/mcp"
    }
  }
}

Gemini CLI

Run this once. It writes .gemini/settings.json in the current project; pass --scope user for ~/.gemini/settings.json.

Gemini CLI configuration

gemini mcp add --transport http votepredictor-mcp https://votepredictor.com/api/mcp

Claude Desktop

Merge this into claude_desktop_config.json (macOS: ~/Library/Application Support/Claude/, Windows: %APPDATA%\Claude\), then restart Claude Desktop.

Claude Desktop configuration

{
  "mcpServers": {
    "votepredictor-mcp": {
      "url": "https://votepredictor.com/api/mcp"
    }
  }
}

Windsurf

Merge this into ~/.codeium/windsurf/mcp_config.json, then refresh MCP in Cascade. Windsurf remote servers use serverUrl, not url.

Windsurf configuration

{
  "mcpServers": {
    "votepredictor-mcp": {
      "serverUrl": "https://votepredictor.com/api/mcp"
    }
  }
}

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