The Libertarian Party national web page has this list of 2018 candidates, which is not yet complete and which will be updated.
The Secretaries of State of Alabama, Arizona, Arkansas, Kansas, Missouri, and South Carolina have filed this amicus curiae brief in the U.S. Supreme Court in the Pennsylvania U.S. House lawsuit over partisan gerrymandering. This is the case in which the Pennsylvania Supreme Court invalidated the U.S. House district boundaries based on the Pennsylvania constitution. The Secretaries of State of these other six states want the U.S. Supreme Court to stay the decision of the Pennsylvania Supreme Court.
The Secretary of State of South Carolina, Mark Hammond, who signed this brief, is not even responsible for election administration in his state. In South Carolina the State Election Commission handles elections.
U.S. Supreme Court rules require that amicus briefs disclose who paid for the filing. This brief reveals that units of the Republican Party paid for it.
On January 23, a U.S. District Court in Philadelphia issued a 79-page ruling in Acosta v Democratic City Committee (formerly known as Little v Vasquez), e.d., 2:17cv-1462. This lawsuit was filed last year after serious irregularities in the special state house special election in the 197th district came to light. This is the special election in which the only candidate listed on the ballot was the Republican nominee, but the Democratic Party and the Green Party both had strong write-in campaigns. The Democratic write-in candidate won, but his opponents filed a lawsuit alleging that polling place officials actively worked to discourage any votes to be cast unless they were for the Democratic nominee.
The decision keeps the case alive, and clears away many procedural obstacles, but it requires the plaintiffs to file an amended complaint, and finds that they should not sue any state officials.
On January 25, Washington SB 6191 passed the Senate Rules Committee. It says that any presidential elector who does not vote for the nominee of his party is deemed to be disqualified. The bill does not cover independent presidential electors; apparently the bill’s authors assumed that no independent presidential candidate will ever carry Washington state. The bill repeals the $1,000 fine for presidential electors who are “disobedient.” Thanks to Jim Riley for this news.
The San Diego Union Tribune has this story about Democratic Party fears that the California top-two system will deprive them of having a candidate on the November 2018 ballot for U.S. House, 49th district.
Of course, Democrats control California state government, and any Democratic legislator is free to introduce a proposed constitutional amendment repealing top-two.