By Daniel Trotta and Jeff Mason (Reuters) -U.S. President Joe Biden travels to Oregon on Friday to rally support for the Democratic gubernatorial candidate, who is in danger of losing in a state where the last Republican to be elected governor was in 1982. The race for the open seat pits Democrat Tina Kotek against Republican Christine Drazan and a strong independent candidate, Betsy Johnson, a former Democrat who is financially backed by Nike co-founder Phil Knight. All three women are former state legislators. Incumbent Governor Kate Brown, a Democrat, cannot run for re-election due to term …