One is a straight-talking, no-nonsense reality TV star who is not a fan of political correctness - and the other is Donald Trump.

Today Judy Sheindlin, who is more commonly known as TV's Judge Judy, has given her verdict on the Republican frontrunner - telling him to tone it down a little bit.

In an interview with KTNV, Ms Sheindlin confessed to being 'crazy' about Trump, but said that in order to win the presidency he will have to learn to 'measure' his arguments.

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TV's Judge Judy Sheindlin has weighed in on Republican frontrunner Donald Trump, saying that while she is 'crazy' about him, it is time for him to tone his rhetoric down

The famously straight-talking judge said that while Trump's 'plain speech' had been refreshing for a while, in order to be a serious candidate for the presidency he will have to learn to 'measure' his arguments

She said: 'Donald is way out there. I think that if he really wants to be considered as a real candidate he has to start to temper some of that rhetoric.

'To be considered presidential timber there has to be a measure in the way you present your argument.'

In April this year, before Trump launched his presidential bid, Ms Sheindlin did another interview giving her two cents on what she would like to see in the electoral race.

Speaking about her ideal candidate, Ms Sheindlin said she wanted someone who spoke honestly on issues 'rather than being politically correct and hearing the same old hogwash the we've heard for the last 30 years'.

Now, Ms Sheindlin said her early feeling helps to explain the meteoric rise of Trump, because his plain style of speaking is one that voters have been waiting to hear.

But, while that 'truthfulness and candor... was appealing for a period of time' Ms Sheindlin said it is now time for Trump to become more diplomatic in his approach.

She added: 'The President of the United State is the leader of the free world and the world has to be able to rely on his or her word, to feel that they have a good moral compass.'

Since his campaign launch back in June, during which he branded Mexican illegal immigrants 'rapists' and 'murderers', Trump has carved out a reputation for saying what other candidates will not

Since his first campaign speech, in which he branded Mexican illegal immigrants as 'rapists' and 'murderers', Trump has forged his political success by saying what other candidates dare not say.

Every attack he mounts, whether it is on issues such as the economy - talking tough with China over jobs - or against his opponents - branding Jeb Bush 'boring' and Ben Carson 'pathological' - has only served to increase his popularity.

However, his latest call to ban all Muslims from entering the United States in the wake of the San Bernardino terror attack has caused a sharp divide in opinion.

While some polls show his popularity among voters has increased further, he has also been condemned from across the political spectrum, with reaction coming from as far afield as Britain and Saudi Arabia.

According to a new NBC/Wall Street Journal poll, while Trump is the favored candidate among Republicans, he is the least likely of the GOP's top candidate to defeat Hillary Clinton.

Ms Sheindlin added that people all over the world have to be able to rely on the word of the President, and so one of the biggest election challenges is convincing people you have a 'moral compass'

Trump will take center stage again at tonight's Republican debate in Las Vegas following on from yet more outspoken comments in which he called for a complete ban on Muslims coming to the U.S.

Of the top four Republican hopefuls, Marco Rubio and Ben Carson are the two who would win narrow victories against Clinton in the national race, the poll shows, while Ted Cruz would lose by around three percentage points.

However, all of those results are within the survey's margin of error, meaning that the races would likely end in a tie, or that the results could even be reversed.

Trump, by contrast, is behind Hillary by 10 points nationally in the poll, meaning he is the only candidate from the top four who would be conclusively beaten.

Asked to expand on their views further, 41 per cent said that Trump's comments were 'frequently insulting', which could perhaps signal that he needs to tone down his speeches.

Meanwhile, Ms Sheindlin says she hasn't decided on her choice for President, but said people need to stay informed about the 'realities of what is going on around them' to make the right choice.