Consistently = enough that Politico's Poll of Polls UK (smooth view) shows any party polling at greater than or equal to 30%, for 14 days in a row, according to the day-by-day hover tool. Excepting any obvious data / charting errors on Politico's end. All 14 days must fall within 2025 I.e. the streak cannot start on Dec 31st 2025.

If for any reason Politico's Poll of Polls ceases to function then the backup metric is Wikipedia's UK Polling chart.