Dorsetshire's elite, the leaders of its “county community,” continued to exercise their customary influence in the county's elections from 1604-1640. However, there was a notable change from the Elizabethan age. During the great Queen's reign, no one family was able to establish a preponderant voice in the county's elections. A “sustained monopoly” was, it seems, impossible and the best any influential squire could hope for was to be twice returned for the county. Indeed, it is probable that only Sir Ralph Horsey of Clifton Maubank, chosen in 1586 and 1597, and Andrew Rogers of Brianston, elected in 1586 and 1588, achieved that degree of eminence. Even the great Sir Walter Raleigh, after establishing himself at Sherborne, only managed to serve for Dorsetshire once, in 1597.
That changed after 1604. Dorsetshire elected eleven men to its eighteen knightships of the shire from 1604-1640, and one man, Sir John Strangways of Chirk Castle and Melbury Sampford, established what can be described as a “sustained monopoly.” He served for the county in 1614, 1621, 1624, and 1628; his repeated victories were recognition of his wealth and estate, his close connections with John Digby, Earl of Bristol (1622) and with other county families of note. Strangways had married into the Trenchard family of Warmwell and Wolveton, near Dorchester; one of his daughters married, first, into the influential Rogers family of Brianston and later, in 1624, took as her second husband the stepson of the Earl of Bristol, Sir Lewis Dyve. Strangways was, no doubt, an active supporter of his brother-in-law, Sir Thomas Trenchard, in Dorset's 1621 election and, in a bitterly fought contest in 1626, it was Strangway's power and influence that accounted for the return of Sir George Morton. Altogether, Sir John's influence can be credited with five, and more probably six (or one-third), of Dorsetshire's knightships through 1640. Given his ability to win a place for Morton in the face of fierce opposition in 1626, it is possible that his influence was even more widespread in the county's elections.