Rep. Jeff Flake, Arizona Republican, campaigns in Phoenix. The six-term congressman seeks re-election as both a Republican primary opponent and Democrats are portraying him as a Washington insider because he worked as a lobbyist 20 years ago for a Namibian uranium operation. (Associated Press)

Rep. Jeff Flake, Arizona Republican, campaigns in Phoenix. The six-term congressman seeks re-election as both a Republican primary opponent and Democrats are portraying him as a Washington insider because he worked as a lobbyist 20 years ago for a Namibian uranium operation. (Associated Press)