Neither. Cortez is unpopular with the moderate majority, and Omar hates America and, IMO, a blatant psychological abuser. Right now they're great to have at the front of the Democrat party because we aren't in the election period yet and both are appealing to the anti-Trump far-left. But when push comes to shove and the Democratic party's power is even more threatened than it is now, both will get pushed out of the way for someone who can win the majority vote. If the Dems stick with the two, they'll quickly change their minds when the moderate majority says "no, we like living and keeping our paychecks...we'll vote for someone else".