(CNN) The Senate race is settled, but the House playing field in Texas will take two more months to sort out.

After an unprecedented set of jam-packed primaries left the leaders of several key primaries below the 50% mark, runoffs are set for May 22.

Here's a look at what we know -- and what we don't -- as Texas tallies the results of Tuesday's primaries:

1. It's O'Rourke vs. Cruz

Democratic Rep. Beto O'Rourke got through the Senate primary without a runoff, CNN projected, and is now set to take on Republican Sen. Ted Cruz.

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