Nebraska appears unlikely to adopt a winner-take-all model of awarding Electoral College votes, despite renewed pressure from prominent Republicans, according to a key state senator.

Republicans are stepping up their efforts to change Nebraska's electoral vote process to winner-take-all -- a move that would benefit former President Donald Trump in an expected close November election in which a single vote could make a key difference in the Electoral College.

In most states in the U.S., the Electoral College is a winner-take-all system. Conservative rural turnout in Texas overrides all the Democratic votes in major urban centers like Houston, Austin and El Paso;