Individuals caucusing with either party will be included with them (e.g. an Independent who caucuses with a party, like Vermont Senator Bernie Sanders who caucuses with the Democrats, would be counted as a Democrat).
If the Democratic Party has exactly 45 Senate seats on Feb 1, 2027, then the market resolves to Yes.
If the Democratic Party has exactly 46 Senate seats on Feb 1, 2027, then the market resolves to Yes.
If the Democratic Party has exactly 47 Senate seats on Feb 1, 2027, then the market resolves to Yes.
If the Democratic Party has exactly 48 Senate seats on Feb 1, 2027, then the market resolves to Yes.