When Mitt Romney picks his running mate could be as important as who he picks, according to senior Republican strategists — and the jury’s out on what would be best for his campaign.

Some argue Romney should wait as long as possible to see how the race shakes out and make the biggest splash with his choice, while others say an early decision would help him with fundraising and earned media. Plus, it would give the former Massachusetts governor a surrogate who can attack President Obama while allowing Romney to stay above the fray.