After much speculation and anticipation, Hillary Clinton has announced her choice for Vice President: senator Tim Kaine (D-VA).

The former mayor and governor is being called a logical and rational choice for Clinton, but many do not see him as a force that can unify the party after a divisive primary.

From the perspective of progressive Democrats and Bernie Sanders supporters, many other names had been speculated that may have been more popular choices, most notably Elizabeth Warren. But in the end, Clinton decided to follow her "responsibility gene" and chose a safe and proven choice. Albeit a bland one as well.

Politically, Kaine is very similar to Clinton -- a centrist, mainstream Democrat who can appeal to moderate voters. So if a VP pick is meant to balance out a ticket, political views weren't a determining factor to this pick.

So what was? An Elizabeth Warren pick would have appealed to progressives as well as make history as the first all-female ticket. A Julian Castro or Cory Booker pick (two other names speculated), would certainly have appealed to minorities.

But a Tim Kaine pick was meant to appeal to a group Clinton has consistently been polling poorly with, especially against Donald Trump: working class white males.

The idea behind a Kaine VP pick is that the son of a welder from a purple state such as Virginia can help sway some moderate Republicans who are unsure about Trump. Politicians in the unique position of someone like Kaine, a Democrat from a state that usually leans Republican and is often a battleground state in presidential elections, can be very valuable to a campaign when making a calculated political decision like this.

But many were disappointed by this pick, hoping Clinton would choose a progressive VP to balance out her ticket and appeal to millions of upset Sanders supporters still unsure about whether or not they will vote for Clinton come election day.