According to her campaign website today, Liz Cheney, daughter of former U.S. Vice President Dick Cheney, has ended her bid for U.S. Senate from Wyoming. Cheney’s withdrawal comes as a relief to Senator Mike Enzi, the Wyoming Republican incumbent who Cheney was challenging from the right. Enzi was one of a number of Republican U.S. Senators who are or were facing primary challenges from fellow Republicans aligned with the right wing Tea Party.