Two Republicans with the same name are running for Senate in Alaska. The bigger threat? Democrat Mary Peltola

Observers call Peltola, who won the red state's House seat twice and is running to unseat Dan Sullivan, a unicorn'

Dan J Sullivan is a retired schoolteacher and US Forest Service employee living in the town of Petersburg in south-eastern Alaska, who is running as a Republican for the US Senate. Dan S Sullivan is a Republican US senator, who has represented Alaska since 2015.

Both candidates will appear on the ballot, one name after the other, when Alaskans vote in primary elections this week - a complicated quirk of the contest that has drawn howls from Republicans.