A GOP-led effort to move Nebraska to a winner-take-all electoral college system was dealt another blow Monday as state Sen. Mike McDonnell (R) said he wouldn't support the change. Why it matters: McDonnell's announcement makes the likelihood of Republicans generating enough votes for the measure very unlikely,

Here's a look at why Donald Trump's allies were pushing for the change, what it would have taken to succeed and why a single state lawmaker is in the national spotlight.

A Republican effort to lock down all of Nebraska’s electoral votes for former President Donald Trump appeared doomed Monday when a state lawmaker denied backers his crucial support for the move.