Voting was underway Saturday as five US states go to the polls to make their choices for who should square off in November's presidential election, dpa reported. The elections are the first since Super Tuesday, in which a dozen states made their decision and solidified the front-runner status of both Republican Donald Trump and Democrat Hillary Clinton. Both Democrats and Republicans vote in Kansas and Louisiana, while Republicans caucus in Kentucky and Maine, and Democrats hold similar meetings in Nebraska. Earliest results are expected after 1900 GMT for the Republican caucus in Kansas, while the final counts for Maine and Lousiana won't arrive until after 0200 GMT Sunday. The Republican establishment has been struggling to prevent Trump, a billionaire newcomer, from seizing the conservative party's nomination for the general election. Nevertheless, he remains well ahead in polls for the Republican contests, though he has yet to amass enough delegates to put him entirely out of reach of his competitors.