WASHINGTON, March 8 (UPI) -- Mitt Romney, the Republican nominee for president four years ago, recorded a phone message supporting Sen. Marco Rubio ahead of Tuesday's primary vote in four states.
The call stops short of endorsing Rubio and Romney has not officially endorsed any candidate in the race. He launched a broadside attack against the front-runner, Donald Trump, last week, saying he is unfit to hold office. Since then, Romney has appeared on numerous cable news programs to reinforce his message to GOP voters: anyone but Trump.