Bell was a member of the WaipaCounty Council and the Hamilton Borough Council. He was the founder of the Waikato Agricultural and Pastoral Association and the first director of the Waikato Dairy Company in 1912. As a conservative, Bell stood for the electorate at the 1908 general election for the opposition, but lost to the incumbent from the Liberal Party, Henry Greenslade. At the 1911 general election Bell stood as an unofficial Reform Party candidate in the newly formed Raglan electorate; the official Reform Party candidate was Richard Bollard. Bell came into conflict with the party's executive over liquor licensing issues, as "it was used not for the purpose of raising the status of politics, but in the interest of the liquor party." During the campaign Bell created controversy when he advocated the abolition of the monarchy, and the creation of a New Zealand republic. He also argued for the abolition of New Zealand's upper house and Britain's House of Lords. As a result of his comments, the Reform Party disendorsed Bell as their candidate. The armed forces considered that Bell had broken his Oath of Allegiance as an Officer. Under pressure, he reluctantly resigned his commission in January 1912.
In 1911, Bell joined the New Zealand Command of the Legion of Frontiersmen and after his discharge from the army went on to devote much of his time and energy into the promoting and expanding the Legion. Bell was appointed as the Legion's Commandant for Auckland with the rank of Colonel. He retained and used this Legion of Frontiersmen rank for the rest of his life. In 1912, Bell journeyed to Dargaville and met with local men Dick Long, Andy Knudson and one other met in the Central Hotel in Dargaville one winter's night and formed the Northern Wairoa Squadron of the Legion. In 1913, as Commandant of the Auckland District Bell convened and chaired a meeting of the Legion in the "Hall of Commerce" for the purpose of considering the viability of setting up a Dominion Executive of the Legion, the election of a Commandant for the North Island and other matters. A ballot was taken by A Squadron's secretary, Frontiersman Thomas E. Whitton, which showed a large majority in favour of a Dominion Executive, a five shilling annual levy for its support, and election of Colonel Bell as the North Island Commandant of the Legion. Captain Forbes-Eadie LOF moved that the current Auckland Executive be disbanded and that Colonel Bell's new executive take over. This was unanimously approved. At the conclusion of the meeting Colonel Bell referred to the great loss sustained by the Defence Forces by the very recent death of Mrs Brewis, who was the first woman in New Zealand to assist in organising the universal military training movement.
Northland
In 1914, three Bell brothers bought land in what is today Kaitaia. He was an enthusiastic promoter of the area north of Auckland, and did much lobbying for making the area accessible via roads and bridges. He acted as a land agent and was a newspaper editor, first writing for the Northern Age and then founding the Northlander. Bell was a supporter of the government's scheme of draining land in the Kaitaia area, and as an owner of swampy land and a land agent, he personally benefited from the initiative.
Member of Parliament
Bell received a requisition in September 1922 for the upcoming election and agreed to stand in the Bay of Islands electorate on the condition that he could be an Independent. He stood for opposition interests and was variously described as an Independent or Independent Liberal. He won against the incumbent of the Reform Party, Vernon Reed. In 1925, Bell successfully stood for the Reform Party, but was defeated by Harold Rushworth of the Country Party in 1928. The election result was declared void, but in the subsequent 1929 by-election Rushworth was again elected.
