It's definitely true that there are some pretty far out CT'ers in the Republican base. That is kind of a recent development though. 30-50 years ago most government conspiracy ideas were pushed by the left. Let's see, Kennedy assasination, Watergate coverup, Iran Contra, Mena drug smuggling, Noriega selling drugs, MLK and RFK assassinations, Bush going to war for Haliburton. Those were all narratives pushed pretty hard by the left at times in our history.
The conspiracy is usually exposed by those not in power. There is actually no conspiracy in the e mail case though. We know exactly what she did, regardless of her fluid narrative after different facts emerged. Comey decided not to prosecute, even though this is definitely not the responsibility of any Law Enforcement Official in any jurisdiction in America. He gave Lynch a HUGE pass, she comes out smelling like a rose, while Comey takes the heat from both Democrats and Republicans due to his statement.
The simple fact of the matter is that HRC is the by far the most conservative candidate in the race on issues of real importance to the Economic and Security Elite. Her positions on trade, interventionism, corporate cooperation with government, et cetera is perfectly in line with most moderate Republicans. She is getting a pass because she is the safest candidate from an establishment point of view. If she were running against Bush, Kasich, Rubiio, Romney, or McCain, Comey's press conference, even without criminal charges, would have finished her off. Remember, she is leading a racist, totally unhinged, game show host (literally) by all of 4 points in the RCP average of polls. That is almost within the margin of error, same as "Stay" was in the Brexit referendum. Pretty amzing.
All that said, because of the Republican Party's decision to nominate a game show host, I will be voting for a woman who has proven she can't be trusted to handle our nation's secrets with care if left to her own devices. Sad state of affairs.