Which VP choice in both parties would not give their ticket a post-VP bounce?

[Suburbia]

Historically, whenever a presidential candidate chooses a running mate, there is a significant change in the polls, due to the fact that that VP pick changes the race in some sense. It happened in 1996, 2000, 2004, and yes, with 2008 (both Biden and Palin pick), except 2012 with the Romney-Ryan ticket. So, which potential VP choices in both parties in 2016 would not change the polls during the summer at all?

http://www.gallup.com/poll/156692/romney-sees-no-immediate-bounce-ryan-pick.aspx

[Potatoe]

2008 (both Biden and Palin pick),

Uh? McCain led by 10 just after the Convention, and led by both 5 and 4 after that for a bit, and Obama gained quite a bit after the DNC, so I don't think that's correct.

[whanztastic]

Historically, whenever a presidential candidate chooses a running mate, there is a significant change in the polls, due to the fact that that VP pick changes the race in some sense. It happened in 1996, 2000, 2004, and yes, with 2008 (both Biden and Palin pick), except 2012 with the Romney-Ryan ticket. So, which potential VP choices in both parties in 2016 would not change the polls during the summer at all?

http://www.gallup.com/poll/156692/romney-sees-no-immediate-bounce-ryan-pick.aspx

Historically VP picks make little difference and the bounce at nomination are short lived, and typically the more important bounces are from the end of primaries and a solid national convention.

Nobody votes for the bottom of the ticket and the choosing of a running mate typically only has the chance to hurt - Eagleton, for example.

The VP only matters to the party, that the bigwigs think they're getting a  good balance.

[Mister Mets]

Interesting question. There's obviously more to a running mate than a temporary bounce in the polls several months before the election, but some veeps aren't going to give a bump.

Paul Ryan was a white guy known as a fiscal wonk, who hadn't been elected to statewide office. He's not the type of guy to make anyone go to Romney, or flee Romney. He's exactly the type you'd expect Romney to nominate.

On the Republican side, it depends a bit on the top of the ticket.
Jeb Bush- This might change if he's a good campaigner, but the last name comes with baggage.
Tim Pawlenty- Bland choice. The voter might not recognize him. Pundits are unlikely to object.
Ted Cruz- Very unlikely to happen, but it certainly won't result in a bounce for the Republican.

Hillary would probably not see a bump if she nominates a woman, or someone who she has been closely associated with.
Terry McAuliffe
Amy Klobuchar
Elizabeth Warren- Very unlikely to happen.

Some other choices might go either way. A Julian Castro might seem like a new face, or enough voters might be convinced he's unqualified. There may be a backlash if Clinton picks an African-American, or it might lead to excitement by voters who were thinking about staying home.