SEATTLE -

Democratic U.S. Sen. Maria Cantwell has clinched re-election, defeating Republican newcomer Michael Baumgartner to win her third term.

Cantwell, Washington state's junior senator, led from the start, amassing a war chest worth more than $8 million that dwarfed Baumgartner's effort, which added up to about $1 million.

Baumgartner is a first-term state senator from the Spokane area who previously worked as a foreign policy consultant. He ended his election challenge to U.S. Senator Maria Cantwell  at 9 p.m., conceding the race and thanking his supporters.

“Although we did not win, we were heard and we should all be proud of how hard we fought to try to fix our broken Washington DC, and to make known that we will not accept $16 trillion in debt, a poorly planned foreign policy and the erosion of the liberties that make America exceptional,” Baumgartner said in a written statement.