[citation needed] He grew up helping his father, who worked for the State Highway Administration, raise beef cattle at home.

In 2016, he joined Glassman's administration as a part-time agricultural specialist in the Harford County Department of Governmental and Community Relations.

[1] In 2006, Gallion unsuccessfully ran for the Harford County Council in District D, finishing second to Chad Shrodes in the Republican primary.

[4] The Harford County Republican Central Committee voted unanimously to appoint attorney Howard Wayne Norman, Jr. to the House of Delegates.

[5] In 2010, Gallion ran an unsuccessful campaign for District 35A of the Maryland House of Delegates, running on a ticket alongside Dave Tritt and seeking to unseat Norman.

[7] During the primary, he received the endorsement of the Maryland Farm Bureau PAC, the NRA Political Victory Fund,[8] and the Cecil County Republican Club.

[13] Days before the Cecil County committee was scheduled to discuss supporting ballot realignment if both candidates declined the nomination, Gallion sent a letter to local GOP leaders that declared his intent to stay in the senate race.

[14] He defeated Independent candidate Frank Esposito and Libertarian Christopher Randers-Pehrson in the general election, receiving 67.6 percent of the vote.

Additionally, Gallion said that he would sponsor legislation that would increase penalties for voter fraud, including a four-year loss of voting rights.

[31] Gallion, who describes himself as a Second Amendment advocate, has said that he is "leery" about red flag gun laws because he does not want to restrict rights for law-abiding citizens.