If leftist Judges preside over any Trump cases would they be objective?

I hasn't worked that way so far

Judges are not supposed to be politically deciding cases.

We know judges lean in their judgement in social issues and some people choose in choices of courts, where to file.

The judges in these Trump cases are not leftist judges. 

All judges require evidence. Evidence can be testimony, but not hearsay. If you actually looked at what has been presented by Trump lawyers, you would find there is nothing but accusations and theoretical possibilities and "I heard that".

As courts are at higher levels, they are even more strict, and Trump's lawyers have failed in almost every case to State Supreme Courts. 

The US Supreme Court Trump appointees have indicated they want strict adherence to State legislatures and state law. As long as elections are run in accordance with state law, Trump can't win in SCOTUS. They only decide whether lower courts acted according to laws and the US Constitution. 

How can there be leftist judges presiding over any of these cases since the majority of the population in these states where Trump was cheated are supposed to be Trump loving republicans?

Your observation is accurate. That is Why the Democrats go so Crazy when a decent and balanced Constitution following Justice is appointed to our Supreme Court.

Leftist judges have sided with Trump before, so yes. Ideally judges are supposed to be nonpartisan, and I trust liberal judges to uphold that more than conservative judges.

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Ask a Judge . I dare you .