When Jeb Bush jumped in the presidential pond, it was widely assumed that it would mean the end of speculation about a possible third run for Mitt Romney.
Maybe not, check it out:

But not only has Romney continued to entertain pleas from advisers to run again, according to two senior staffers from Romney’s 2012 campaign, Bush’s exploratory move hasn’t changed the landscape for Romney that much. Romney huddled with top advisers in California on Wednesday, a group that reportedly was to include big names like Ben Ginsberg, Andrea Saul and Lanhee Chen. While we can’t know exactly what was said, top aides who spoke to Fox News First prior to the conclave said that Bush’s build-out isn’t a factor. One said that Bush and Romney were “fishing in different pools” of donors and could both proceed with explorations.