A Rasmussen Reports telephone survey conducted Tuesday night found John McCain leading Mitt Romney by four percentage points—32% for McCain, 28% for Romney. The survey was conducted in the hours immediately following Florida’s Presidential Primary. Since the survey was completed, Rudy Giuliani has dropped out of the Presidential race and endorsed McCain.

Sixty-five percent (65%) of Giuliani voters had a favorable opinion of Romney while 53% said the same about McCain. Sixty-eight percent (68%) of Giuliani’s voters believe McCain would be at least somewhat likely to win if nominated. Sixty-one percent (61%) are that confident about Romney’s electability.

Also, since the survey was completed, California Governor Arnold Schwarzenegger has signaled his intention to support McCain.

The survey found Giuliani attracting 14% of the vote in California while Mike Huckabee picked up 11%. Ron Paul earned 5% of the vote, 6% said they would vote for some other candidate, and 3% were not sure.

As of Tuesday night, the race was very fluid—just 57% of voters were “certain” they had settled on their final choice. Fifteen percent (15%) said there was a good chance they could change their mind.

Two weeks ago—weeks in which the Republican race completely changed—McCain led Romney by seven points in California.

Romney narrowly leads McCain among conservatives 37% to 26%. McCain attracts 53% of moderates. Giuliani picked up 15% of the moderate vote while Romney earned 11%.

Rasmussen Markets data following the candidate’s debate on Wednesday suggested that McCain had an 83% chance of winning the Republican Presidential nomination (current pricing: %). See a summary of market data for the GOP Super Tuesday Primaries and the latest Rasmussen Reports Super Tuesday polls.

While market data suggests McCain is the overwhelming favorite for the nomination, the Rasmussen Reports daily Presidential Tracking Poll shows a close race between the two frontrunners. The coming days will begin the measure the race without Giuliani. A Rasmussen Reports analysis notes that the McCain’s circuitous path to the nomination has left him better off than his original frontrunner strategy.

In California, 35% of Republican Primary Voters named the economy as the top voting issue. Immigration is the top priority for 25% followed by the War in Iraq (16%) and National Security (12%).

As he did in Florida, McCain leads Romney slightly among voters who name the economy as the highest priority. McCain also leads among those who see Iraq and National Security as their top voting issue. However, Romney leads by a two-to-one margin among voters focused on immigration.

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