Do you think President Obama could have ordered (covertly or overtly) wire-tapping of then President-Elect Trump?

Absolutely! Who was there to tell him no in his administration when that was the last man they wanted to see elected?

Since he covertly ordered the data collection of millions of Americans what's a rival presidential candidate matter?

Based on the news it looks like everybody is wiretapping everybody. Nothing would surprise me anymore. George Orwell is rolling over in his grave. And he's a little jealous; he never dreamed it would get this bad. His novel 1984 could have been so much more if he had known.

I don't trust obama any further than I could through him. I certainly wouldn't put it passed him to order illegal surveillance.

I have no doubt that he did.

Not directly ordered...
Something more on the lines of "Will no one rid me of this turbulent priest?"

Absolutely...I would bet my last dollar on that..Obama's intent? Defame the Trump administration

Yes

I really have no idea whether he did or not. I do know Obama and his minions received, and released to the media, sealed court documents concerning Congressman Jack Ryan and his wife’s divorce and custody arrangements during the 2004 Illinois senatorial campaign. The fact that he publicized the accusations concerning Ryan’s divorce without proof is an indication of how low he could stoop. Ryan was several points ahead of Obama in the campaign and would have won the seat had Obama not publicized the sealed court documents. I wouldn’t put anything past Obama and his little buddies.

Could he? yes. Would he? probably so if it appeared to be necessary. Did he? That's the question. I don't know why someone in government has not yet confirmed whether a FISA warrant was even granted. Mark Levin, conservative media, BBC and The Guardian say the Obama WH tried for a warrant but were denied in summer and obtained one in October. I've read that these warrants are highly classified, but even FBI Dir. Comey has asked for somebody at DOJ to clear it up. One thing is certain though - that we aren't discussing the new EO, the proposed changes to ACA, or N Korean missiles.