Elections

{
  "data": {
    "arithmetic_majorities": [
      {
        "coalition": "GroKo (CDU+SPD)",
        "probability_arithmetic_majority": 91.7
      },
      {
        "coalition": "CDU+AfD",
        "probability_arithmetic_majority": 71.6
      }
    ],
    "data_quality": {
      "inputs": {
        "days_to_election": 181,
        "latest_poll_days_ago": 319,
        "mean_sigma_pp": 3.06,
        "n_polls": 5
      },
      "label": "grob",
      "score_1_to_10": 3
    },
    "election": {
      "date": "2027-04-18",
      "days_until": 181,
      "id": "sl-2027",
      "name": "Landtagswahl Saarland",
      "region": "SL",
      "seat_method": "dhondt",
      "seats": 51
    },
    "parties": [
      {
        "ci95": [
          20.9,
          35.3
        ],
        "entry_probability": 100,
        "median": 27,
        "name": "SPD",
        "party": "SPD",
        "poll_average": 27,
        "seats": {
          "ci95": [
            11,
            20
          ],
          "mean": 15.3,
          "median": 15
        }
      },
      {
        "ci95": [
          18.7,
          33.8
        ],
        "entry_probability": 100,
        "median": 25,
        "name": "CDU",
        "party": "CDU",
        "poll_average": 25,
        "seats": {
          "ci95": [
            10,
            19
          ],
          "mean": 14.2,
          "median": 14
        }
      }
    ],
    "recent_polls": [
      {
        "date": "2025-12-03",
        "institute": "Infratest dimap",
        "results": {
          "AfD": 23,
          "BSW": 3,
          "CDU": 25,
          "Grüne": 7,
          "Linke": 7,
          "SPD": 27
        }
      },
      {
        "date": "2025-04-02",
        "institute": "Infratest dimap",
        "results": {
          "AfD": 17,
          "BSW": 4,
          "CDU": 27,
          "FDP": 3,
          "Grüne": 6,
          "Linke": 8,
          "SPD": 30
        }
      }
    ],
    "strongest_party_probability": {
      "AfD": 16.4,
      "CDU": 30.2,
      "SPD": 53.3
    }
  },
  "docs": "https://api.polls.karbach.digital/v1/",
  "model": {
    "point_estimate": "weighted_poll_avg (Fenster 5, temporal_decay_14d + institute_quality)",
    "polls_used": 5,
    "simulations": 10000,
    "version": "4.16"
  },
  "notice": "Scenario analysis based on published opinion polls. Not a prediction and not a voting recommendation. Coalitions are arithmetic majorities only, not statemen...",
  "project": "Ein Projekt von Karbach.Digital (https://karbach.digital)",
  "source": {
    "polls": "dawum.de",
    "polls_license": "ODbL 1.0",
    "polls_license_url": "https://opendatacommons.org/licenses/odbl/1-0/",
    "processing": "polls.karbach.digital (Max Karbach)"
  },
  "uncertainty": "ci95 per party from Monte Carlo simulation; seats with ci95; data_quality shows how thin the poll base is.",
  "updated_at": "2026-10-18 00:00:02"
}

# bash or zsh: see the payment challenge. Nothing is charged.
curl -sS -g -i 'https://api.polls.karbach.digital/v1/elections/:id'

# x402 v2 sends the challenge base64-encoded in the PAYMENT-REQUIRED header (v1 sends it in the body).
# To read the header:
curl -sS -g -o /dev/null -D - 'https://api.polls.karbach.digital/v1/elections/:id' \
  | grep -i '^payment-required:' | cut -d' ' -f2 | tr -d '\r' | base64 --decode

// npm i @x402/fetch @x402/evm viem
import { wrapFetchWithPayment, x402Client } from "@x402/fetch";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

// Pays at most $0.02 per call.
const client = new x402Client().setSpendControls({ maxAmountPerPayment: "$0.02" });
registerExactEvmScheme(client, { signer: privateKeyToAccount(process.env.EVM_PRIVATE_KEY) });
const pay = wrapFetchWithPayment(fetch, client);

// Not sure it's safe to pay? ToolVet checks it first for $0.005. Pay for that from a separate
// client: this one is capped at $0.02 per payment. GET https://toolvet.app/api/v1/check?url=https%3A%2F%2Fapi.polls.karbach.digital%2Fv1%2Felections%2F%3Aid
const res = await pay("https://api.polls.karbach.digital/v1/elections/:id");
console.log(res.status, await res.text());

# pip install "x402[requests,evm]"
import os
from eth_account import Account
from x402 import x402ClientSync
from x402.http.clients import x402_requests
from x402.mechanisms.evm import EthAccountSigner
from x402.mechanisms.evm.exact.register import register_exact_evm_client

# Pays at most $0.02 per call.
client = x402ClientSync().set_spend_controls({"max_amount_per_payment": "$0.02"})
register_exact_evm_client(client, EthAccountSigner(Account.from_key(os.environ["EVM_PRIVATE_KEY"])))

with x402_requests(client) as session:
    res = session.get("https://api.polls.karbach.digital/v1/elections/:id")
    print(res.status_code, res.text)