Winchester businessman John Kingston officially launched his 2018 Republican U.S. Senate bid Wednesday, adding his name to the growing list of GOP challengers looking to unseat incumbent Democrat Elizabeth Warren.

Kingston, who has publicly weighed the idea of running for Senate since July, announced his entrance into the 2018 U.S. Senate race in a morning email and video to supporters.

Casting himself as "an independent leader who will fight for a stronger and more just Commonwealth," Kingston argued that he is the only Republican candidate "with the record, resources and message to defeat Sen. Warren."

The GOP hopeful added that, if elected, he will strive to end to the current divisive politics in Washington -- something which he argued Warren exacerbates.

"We have just one shot as Republicans at derailing Sen. Warren's presidential aspirations and sending a leader to Washington who will put results before politics," he said in a statement. "We cannot risk that chance on candidates who cannot deploy the resources necessary to win, or on candidates who are unelectable or uninspiring."

Stressing that he will run "a different kind of Republican campaign than people are used to seeing," Kingston pledged to take his message to every single state voter -- including those in Western Massachusetts -- regardless of party, in hopes of building a movement focused on restoring unity in public life.

"We care about everybody in this state and that's my commitment, number one, and number two: that's what I'm going to demonstrate in my actions," he said in an interview.

The 52-year-old businessman, who is expected to outline his platform during a Wednesday evening speech at the Edward M. Kennedy Institute for the U.S. Senate in Boston, said he plans to "lay out a new Republican vision of leadership for our state."

That vision, he said, will be one in which Republicans "stay true to (their) principles but also seek common cause across partisan lines and including all communities to improve the lives of all citizens."

Kingston, who said he hopes to emulate Republicans like Massachusetts Gov. Charlie Baker if sent to Washington, added that his vision aims to take the party's classic values of freedom and liberty and interpret them "to achieve the good for all" in today's world.

"I intend to recall the principles of the great leaders Massachusetts has produced who galvanized our state through their service and achieved real results for hardworking families by always seeking the greater good," he said.

Despite the growing field of Republicans who have announced 2018 U.S. Senate bids, Kingston said he's confident about his primary and general election chances.

The businessman loaned $3 million of his own money and raised $256,000 for his bid between July and the end of September, according to campaign officials.

Fellow Republican U.S. Senate hopeful Shiva Ayyadurai, a Cambridge-based entrepreneur, by comparison, reported more than $1.21 million in net contributions, which included nearly $1.15 million from the candidate alone.

Other 2018 Republican candidates state Rep. Geoff Diehl, R-Whitman, meanwhile, raised a reported $367,000 in the third quarter of 2017; and Beth Lindstrom raised more than $75,000 for her bid between Aug. 21 and Sept. 30, including $25,000 in candidate loans.

Warren, in turn, collected a total of $2.98 million in the third fundraising quarter of 2017, bringing her cash balance to nearly $13 million as of Sept. 30, her campaign reported.

Despite the Democrat's fundraising advantage, Kingston contended that his strength as a candidate, coupled with Warren's vulnerability, will even things out come November 2018.

"The fundraising edge over time will be eliminated because people are going to see that I'm an electable candidate that can take out Sen. Warren," he said.

Allen Rodney Waters, of Mashpee; Darius Mitchell, of Lowell; and Heidi Wellman, of Braintree; have also filed to run as Republicans in the 2018 U.S. Senate race.