President Donald Trump said he thinks Republicans could flip a handful of congressional districts in Texas next year through “​​just a very simple redrawing."

Texas legislators are set to consider a new set of congressional maps during the special session that starts July 21. The current maps were redrawn four years ago, but some argue they are constitutionally flawed. What does redistricting do and how does it impact voters? Our Joe St. George explains.

In order to stop the new maps from being created, House Speaker Hakeem Jeffries reportedly told Texas Democrats to “quorum bust,” or leave the state in order to prevent the legislature from meeting. Democrats used the tactic back in 2003 when Republicans did mid-decade redistricting to draw out several Democratic incumbents.

President Donald Trump on Tuesday said he believed Republicans could pick up five seats in the U.S. House of Representatives by redrawing districts in Texas, which could boost his party's odds of defending its thin majority in next year's midterm elections.

Redistricting is one of 18 items on the agenda during the Texas legislative special session that begins July 21.

House Democrats are hammering President Trump and his GOP allies for pushing to alter Texas’s congressional lines ahead of the midterms, accusing the Republicans of rigging the system to stay in power.

Gov. Gavin Newsom on Wednesday confirmed he's seriously considering two options to try to redraw California's congressional districts to get more Democrats elected to the U.S. House of Representatives.