* Bill Clinton was impeached. As you point out, he did commit perjury. However, the legal standard for impeachment is high crimes and misdemeanors; it was one of only two impeachments in 240 years (EDIT: Plus a third, Nixon, who IIRC would have been impeached if he hadn't resigned). Those are very high standards; obviously if Bill Clinton's wrongdoing was the standard far more would have been impeached. In fact, perjury is very rarely prosecuted for anyone. For example, GW Bush ran an illegal surveillance program - a far more serious crime - and there were no consequences.
* The 2000 Presidential election was decided by Republicans on the Supreme Court. Arguably it may also be a legally legitimate decision, but it was apparently a political one, as the vote was party-line.
* Democratic voters are accused of criminal fraud, with no evidence, and the GOP uses the government to suppress their voting.
* Organizations that register Democrats to vote are criminalized and shut down. Acorn is one prominent example of many.
* Organizations that promote Democrat-favored causes are criminalized. Planned Parenthood is one.
* The GOP used state powers to investigate Hillary Clinton endlessly, on Benghazi and her email server (note that nothing was found for either). Trump is still leaving open the possibility of continuing to investigate her. It cost her the election. Compare that to Trump, for whom there are no known investigations despite brazen sexual harassment, sexual harassment of minors, tax fraud, and much more.
* The FBI openly took actions, contrary to its rules and traditions, that undermined Clinton and probably cost her the election.
The list goes on and I think the pattern is clear.