Wortley Montagu's political interest was based on his family's influence in the Midlands. He was returned as
Member of Parliament for
Huntingdon after a contested election in February 1679. He was nominated to the committee of elections and privileges in the first Exclusion Parliament, but made no speeches and was absent from the division on the exclusion bill. He was Commissioner for assessment for Huntingdonshire and Huntingdon from 1679 to 1680. At the general election of August 1679, he was returned for Huntingdon again but was inactive in the second Exclusion Parliament. He was appointed Deputy Lieutenant for West Riding for a year in 1680. He was returned again in February 1681 and was again appointed to the elections committee in the third exclusion parliament. After a brief canvass in Huntingdon in 1685, he abandoned the contest at the March 1685 general election. Wortley Montagu was a follower of the
Whig Junto in early 1700 and was returned on the Whig interest for Peterborough in both the elections in 1701 elections. He was Justice of the Peace for Huntingdonshire by 1701. He was returned unopposed for Peterborough at the
1702 English general election, but the struggle to control the interest at Huntingdon with the Tory-supporting Lady Sandwich intensified and led to dispute within parliament. He was again otherwise relatively inactive in Parliament. He was returned again for Peterborough at the
1705 English general election and on 25 October he voted for the Court candidate for Speaker. At the
1708 British general election, he was returned again for Peterborough. He supported the bill to naturalize the Palatines which was guided through the Commons by his son
Edward. In 1710, he supported the impeachment of
Henry Sacheverel. He was defeated at Peterborough at the
1710 British general election, and his petition against the return was unsuccessful. As a member of a north-east coal cartel with his brother, Charles Montagu, and Sir Henry Liddell, 3rd Baronet, he petitioned the Commons on 13 April 1710, against a bill to dissolve and prevent further combinations in the coal trade, and through extensive lobbying, was able to negate the bill's effect upon their activities. He was appointed joint High Steward of Northallerton, Yorkshire by 1713. Recognising the value of a seat in parliament, he replaced his son as Member for Huntingdon at the
1713 British general election, his interest in the borough remaining strong despite the intrusion in this election of his great-nephew
Edward Montagu, Viscount Hinchingbrooke. He remained an inactive Member, but on 18 March 1714 voted against the expulsion of
Richard Steele. ==Coal cartels==